Ffugenwau Cymreig

Rhestr o enwau llenorol, barddol, cerddorol, enwau yn Orsedd, llysenwau a ffugenwau Cymreig eraill. Gan fod miloedd o Gymry wedi defnyddio ffugenwau dros y degawdau mae'r rhestr yn hynod anghyflawn. Gellir cynorthwyo Wicipedia trwy ychwanegu ato.

## A 
***Ab Cenydd** Joseph Thomas (1813–1865) 
***Ab Geraint** John Roland Phillips (1844–1887)
***Ab Idanfryn** Gwilym Hughes 
***Ab Ithel **John Williams (1811–1862)
***Ab Tegai** Hugh Hughes (1805–1864)
***Abram Fardd** William R. Abraham
***Absalom Fardd** Absalom Roberts, Llanrwst (tua 1780–1874)
***Achydd Glan Troddi** Joseph Alfred Bradney (1859–1933)
***Adda / Adda Jones** John Evans (1814–1875) (hefyd **I. D. Ffraid**)
***Adda Fras** Robert Jones
***Adelphos** Joseph Harris
***Adfyfr ** Thomas John Hughes (1853–1927)
***Aelhaiarn Hir** Richard Owen, Llanfachraeth, Môn (hen daid i Owen Williams Machraeth Môn)
***Afallon** William J Owen, gweinidog MC a bardd, Bangor (g. 1865)
***Afallon** John Owen, gwleidydd llywodraeth leol, Llandudno
***Afan** David John Thomas (1881–1928)
***Afanwyson ** Thomas Morgan (1850–1939)
***Afaon** William Williams Morris, Llanberis 
***Alafon** Owen Griffith Owen (1847–1916)
***Alarch Gwyrfai ** R. A. Hughes
***Alaw Afan** William Evans
***Alaw Ceris** Thomas Roberts
***Alaw Clwyd** Edwin Jones (1842–1932) 
***Alaw Ddu ** William Thomas Rees (1838–1904)
***Alaw Elwy** John Roberts (1816–1894) (hefyd **Telynor Cymru**)
***Alaw Goch** David Williams (1809–1863)
***Alaw Rhondda** Joseph Rhys Lewis
***Alaw Twrog** John Thorman (1852–1909) (hefyd **Twrog**)
***Alawydd** David Roberts (1820–1872)
***Alawydd Glan Taf** John Bryant
***Alawydd Menai** John Roberts
***Alawydd y De** Llewellyn Williams (1822–1872) (hefyd **Pencerdd y De**)
***Aled o Fôn** Owen Rowland (c.1820–1877) 
***Alfa** Parch William Richards, Hermon Brynaman (1875-1931)
***Alfardd** John James Hughes (1842–1875)
***Alfryn** David Thomas 
***Allen** Evan Owen (1805–1852)
***Allen Raine** Anne Adaliza Beynon Puddicombe (née Evans) (1836-1908) 
***Alun** John Blackwell (1797–1840)
***Alun Cilie** Alun Jeremiah Jones (1897–1975)
***Alun Elidyr / Alun Cae Coch** Alun Edwards (g. 1959)
***Alwenydd** William Jones, Rhiwbryfdir, Ffestiniog
***Alwyn ap Huw** David Alwyn (ap Huw) Humphreys (g. 1959) (hefyd **Hen Rech Flin**)
***Alys Mallt** Alice Matilda Langland Williams (1867–1950)
***Alltfab** Rhys Evans
***Alltud Eifion** Robert Isaac Jones (1815–1905)
***Alltud Glyn Maelor** John Robert Jones (tua 1800–1881) 
***Aman ** J. C. Parkinson
***Amanwy** David Rees Griffiths (1882–1953)
***Amnon** Rees Jones (1797–1844)
***Amy** Amy Lane 
***Anarawd** William Milton Aubrey (1861–1889)
***Andreas O Fôn ** Andrew Jones Brereton (1827–1885)
***Andronicus** John William Jones (1842–1895)
***Aneirin ap Talfan** Aneirin Talfan Davies (1909–1980)
***Anellydd** Arthur Simon Thomas (1865–1935)
***Aneurin Fardd ** Aneurin Jones (1822–1904)
***Aneurin Llwyd** Arthur Morgan, Cwmystwyth
***Ann of Swansea **Julia Ann Kemble (Ann Hatton) (1764–1838)
***Anthropos ** Robert David Rowland (1853?–1944)
***Ap Caledfryn** William Williams
***Ap Cammarch** Josiah Jenkins (1860–1930)
***Ap Ceredig** Edward Jenkins
***Ap Ceredigion** David Lewis (1870–1948)
***Ap Cimmerchyn** Edward E. Jones, Floyd, Efrog Newydd. 
***Ap Farren** George Alexander Macfarren (1813–1887)
***Ap Fychan** Robert Thomas (Ap Vychan, fel arfer) (1809–1880)
***Ap Ffarmwr** John Owen Jones (1861–1899)
***Ap Glaslyn** Richard Jones Owen (1831–1909)
***Ap Gwarnant**  Thomas Oswald Williams (1888–1965)
***Ap Hefin** Henry Lloyd (weithiau Ap Hevin neu Ab Hevin) (1870–1946)
***Ap Idanfryn** Gwilym Hughes
***Ap Ionawr** David Price
***Ap Llechwedd** Evan Rowlands
***Ap Llewelyn** Henry Lewis, Utica, Efrog Newydd (1820–1871)
***Ap Llysor** William R. P. George (1912-2006)
***Ap Maldwyn** Humphrey Tudor (c.1843–91)
***Ap Morydd** Richard M. Williams, Floyd, Efrog Newydd (1789–1883) 
***Ap Mwrog** Joseph Edward Roberts
***Ap Myfyr** John Davies
***Ap Nathan** James Ednyfed Rhys
***Ap Neifion** Thomas Morel (1847–1903)
***Ap P.A. Môn **John William Jones
***Ap Rhufoniawc** John Morris
***Ap Rhydderch** Daniel Owen (1852–1912)
***Ap Valant** James Williams 
***Ap Vychan** Robert Thomas (1809–1880)
***Arafon** William Hugh Williams
***Arfona** Thomas Edwards
***Arfonog** R. W. Roberts
***Arfonwyson** John William Thomas (1805–1840)
***Arfryn** George Thomas
***Arianglawdd**  William Rees (1854–1934)
***Arlunydd Gwalia** J. J. Dodd
***Arlunydd Penygarn** Thomas Henry Thomas (1839–1915)
***Arthan** William Henry Harris
***Arthur Machen** Arthur Llewellin Jones (1863–1947)
***Arvonius** Thomas Roberts
***Arwyddfardd ** Robert J. Humphreys
***Arwystl** Hugh William Hughes (1813?–1904)
***Asaph Glan Taf ** Rosser Beynon (1810–1876)
***Asaph Gwent ** William Jones
***Asaph Llechid** Robert Davies
***Asaph** Thomas Rowland Roberts
***Asiedydd ** Richard Jones 
***Athan Fardd** John Athanasius Jones (1840–1892)
*'''Athraw'r Celfyddydau** Syr Richard Hill
***Awen Mona** Elizabeth Jane Davies-Rees (née Williams) (m. 1972)
***Awena Rhun** Elinor Hannah Thomas (née Jones)
***Awenydd Tysul** George Evans

## B 
* **B_Dd [=Bardd?]** John Hughes (1775–1854)
* **Bachan Ifanc, y** William Williams 
* **Bard of Snowdon** Richard Llwyd (1752–1835)
* **Bard of the Forest** W. S. Wickenden
* **Bardd Alaw** John Parry (1776–1851)
* **Bardd Berw** W. Roberts
* **Bardd Bryncroes** Evan Pritchard (1769–1832)
* **Bardd Cloff, y** Thomas Jones (1768–1828)
* **Bardd Coch o Fôn, y** Huw ap Huw / Hugh Hughes (1693–1776)
* **Bardd Coch** Thomas Elias (1792–1855)
* **Bardd Cocos, y** John Evans (1826–1895)
* **Bardd Crwst** Abel Jones (1829–1901)
* **Bardd Du Eryri** Abraham Williams (1755–1828)
* **Bardd Du Mon** Robert (Mona) Williamson (1807–1852)
* **Bardd Einion** David Morris (1797?–1868)
* **Bardd Glas Morganwg** Edward Williams 
* **Bardd Horeb** Evan Thomas 
* **Bardd Mawddach** Robert Jones
* **Bardd Môn** William Jones
* **Bardd Nantglyn** Robert Davies (1769–1835)
* **Bardd Treflys** Richard Roberts (1818–1876)
* **Bardd y Brenin** Edward Jones (1752–1824)
* **Bardd y Mor** Robert Owen (1858–1885)
* **Bardd y Gwagedd** Richard Williams (1805?–1865?)
* **Barlwydon** Robert John Davies 
* **Bathafarn** Edward Jones (1778–1837)
* **Bedo Beuno**  Meredith Jones (fl. 1782) 
* **Beili Glas** David Rhys Phillips (1862–1952)
* **Beren** Gruffydd Thomas Evans, Pwllheli (1853–1914)
* **Berllanydd** William Berllanydd Owen (1899–1984)
* **Berw** Robert Arthur Williams (1854–1926)
* **Berwyn** Richard Jones Berwyn (1836–1917)
* **Berwynydd** David Richard Jones (1863–1932)
* **Beuno** Bennet Gwilym Williams
* **Bleddyn**  David Owen (1795–1866) (hefyd **Brutus**)
* **Blegwryd ab Seisyllt** Joseph Hughes (1827–1841)
* **Bob Tai'r Felin** Robert Roberts (1870–1951)
* **Bodfan** John Bodvan Anwyl (1875–1949)
* **Brenin** Y Parch. David Williams (1785–1862)
* **Brinli** Brinley Richards (1904–1981)
* **Britannicus** Thomas Burgess (1756–1837)
* **Brithdir** Hugh Douglas Williams (1917–1969)
* **Brithyll Marlais** Nathaniel Marlais Thomas
* **Bro Gwalia** John Rowlands
* **Brutus** David Owen (1795–1866) (hefyd **Bleddyn**)
* **Brychan / Brychan Bach** John Davies (1784?–1864)
* **Bryfdir** Humphrey Jones (1867–1947)
* **Bryn** Richard Bryn Williams (1902–1981)
* **Brynach** J. Brynach Davies (1873–1923)
* **Brynfab** Thomas Williams (1848–1927)
* **Brython** Hugh Hughes (1848–1913)
* **Brythonydd** David Pryse Williams (1878–1952)
* **Buddug** Catherine Jane Prichard (1842–1909)
* **Byrdir** Thomas Williams (tad Pedr Hir)

## C 
***Cadfan** Hugh Williams (1807?–1870)
***Cadfan Gwynedd** Hugh Hughes (1824-1898)
***Cadifor** Edward Samuel (1852–1937)
***Cadrawd** Thomas Christopher Evans (1846-1918)
***Cadvan** John Cadvan Davies (1846-1923)
***Caerfallwch** Thomas Edwards (1779-1858)
***Caerfyrddin** Titus Lewis (1773-1811)
***Caeronwy** David (Caeronwy) Harris (1846-1885)
***Caerwyn** Owen Ellis Roberts,
***Caerwyson** Thomas Pritchard Edwards, David Joshua
***Caledfryn** William Williams (1801-1869)
***Calfin** Daniel Richards 
***Callestr** Thomas Manuel
***Cambrensis** Arthur James Johnes 
***Cambria's Bard** William Thomas 
***Canrhawdfardd** Thomas Jones (1823-1904)
***Canwr Cilarne**  Alfred Perceval Graves (1846–1931)
***Capelulo** Thomas Williams
***Caradawc / Caradawc y Fenni** Thomas Bevan (1802-1882)
***Caraddaeg** John Jones Thomas 
***Caradog** Thomas Bevan (1802-1882)
***Caradog** Richard Meredith (1826-1856)
***Caradog** Griffith Rhys Jones (1834–1897)
***Carl Morganwg** John Charles Manning
***Carn Ingli** Joseph Hughes (1803-1863)
***Carneddog** Richard Griffith (1861-1947)
***Carneinion** James Evan(s) (1814-1842)
***Carnelian** Coslett Coslett (1834–1910)
***Carnelian** James Evan(s)
***Carnfaldwyn** Thomas Charles Edwards (1837–1900)
***Carnhuanawc** Thomas Price (1787-1848)
***Carw Coch** William Williams (1808-1872)
***Carwr y Cymru** Oliver Thomas  (tua 1598–1652)
***Casgob** W. S. J. Rees (1772–1855)
***Castell Hywel** David Davis (1745-1827)
***Catwg** Charles Wilkins (1831-1913)
***Cawr Cynon** William Evans (1808-1860)
***Cawr Dâr** William Lewis 
***Cawrdaf** William Ellis Jones (1795-1848)
***Cefn Bithel** R. P. Everett
***Cefni** Hugh Parry (1826-1895)
***Ceiriog** John Ceiriog Hughes (1832-1887)
***Celt** Edward Morgan Humphreys (1882-1955)
***Celyddon** D. Phillips
***Celynon** Edward Vaughan (1837?-1906)
***Cenydd Morus** Kenneth Vennor Morris (1879-1937)
***Cephas** Peter Hughes (1854-?)
***Cerddor Towy** Henry Brinley Richards  (1817–1885)
***Ceridwen** Ann Rees (1874-1905)
***Ceridwen Peris** Alice Gray Jones (1852-1943)
***Ceulanydd** John Ceulanydd Williams (1847?–1899)
***Chemicus** J. C. Roose
***Cledanydd** Thomas Evans 
***Cledlyn** David Rees Davies (1875-1964)
***Clwydfardd** David Griffith (1800-1894)
***Clwydfro** Thomas Williams (1821-1855)
***Clwydia** M. L. Lloyd
***Clwydwenfro** John Lloyd James (1835-1919)
***Clwydydd** Thomas Rhys Jones (1868-1950)
***Clywedog** Morris Pugh (1828-1856)
***Coch Bach y Bala** John Jones (1854-1913)
***Coch y Berllan** Thomas Evans (hefyd **Telynog**)
***Cochfarf** Edward Thomas (1853-1912)
***Cocosfardd y De** Elias Jones
***Collwyn** William Morgan
***Cor y Cyrtie** Owen Jones
***Corfan** Hugh Williams
***Corfanydd** Robert Herbert Williams (1805-1876)
***Cowlyd** John Cowlyd
***Craigfryn** Isaac Hughes (1852-1928)
***Cranogwen** Sarah Jane Rees (1839-1916)
***Cre-fydd** Mrs A. E. Griffiths
***Creidiol** Jabez Edmund Jenkins (1840-1903)
***Creuddynfab** William Williams (1814-1869)
***Cristiolus Môn** David Hughes (1810-1881)
***Cristion** Hugh Hughes
***Croesgochiad** Henry Griffiths (1856–1931)
***Cromwell o Went** Hugh Jones (1800-1872)
***Crugwyson** T. R. Davies
***Crwys** William Crwys Williams (1875-1968)
***Crych** Elen Thomas Lloyd (1841-1909)
***Crythwr Dall o Geredigion** Thomas Francis (1726-1796)
***Cuhelyn** Thomas Gwallter Price (1829-1869)
***Cwilsyn Gwyn, y** John Evans Jones
***Cybi** Robert Evans (1871-1956)
***Cyfaill Babanod** Joseph Harris (1773-1825) (hefyd **Gomer**)
***Cyffin** Thomas Griffiths Jones (1834-1884)
***Cyffin Glan Conwy** John Jones, Lerpwl (1806-1869)
***Cymro Bach** Benjamin Price (1792-1854)
***Cymro Cloff, y** Richard W. Jones (1806-93)
***Cymro Gwyllt** Richard Jones (1772-1833)
***Cymro Gwyllt** William Edwards (1826-1884)
***Cynalaw** David L. Jones
***Cyndelyn** Tomos Efans 
***Cynan** Albert Evans-Jones (1895-1970)
***Cynddelw** Robert Ellis (1810-1875)
***Cynddylan** John Cynddylan Jones (1841-1930)
***Cyndeyrn** Robert Davies (1814-1867)
***Cynfab Carw** Lewis Noah Williams (c.1845–1919; mab **Carw Coch**)
***Cynfaen** John Hugh Evans (1833-1886)
***Cynfelyn** Robert Parry, Wisconsin
***Cynfor** Parch. Hugh Evans (1866-1934)
***Cynhafal** Nathaniel Jones (1832–1905)
***Cynhaiarn** Ellis Owen 
***Cynhaiarn** Thomas Jones (1839-1916)
***Cynhaval** John Williams (1811-1862)
***Cynllo Maelienydd** Morgan Evans (1777?-1843) (hefyd **Cynllo Maesyfed)**
***Cynllo Maesyfed** Morgan Evans (1777?-1843) (hefyd **Cynllo Maelienydd)**
***Cynonfardd** Thomas Edwards (1848-1927)
***Cyw Cloff, y** John Davies (g. 1822)

## D 
***Dafis Castellhywel** David Davis (1745-1827)
***Dafydd ap Gwilym o Fuallt** David D. Williams 
***Dafydd ap Ioan** David Jones 
***Dafydd Brydydd Hir** David Jones (1732-1882?)
***Dafydd Ddu (o) Eryri** David Thomas (1759-1822)
***Dafydd Ddu Feddyg** Dafydd Samwell
***Dafydd Glan Teifi** David Saunders II (1769-1840)
***Dafydd Hael o Dowyn** gw. **Davydd Hael o Dowyn**
***Dafydd Ionawr** David Richards (1751-1827)
***Dafydd Jones y Bobol** Parch. David Jones (1785-1862)
***Dafydd Morganwg** David Watkin Jones (1832-1905)
***Dafydd Mynydd Bach** Daniel James (1847-1920)
***Dafydd Sion Pirs** David Jones (1732-1782?)
***Dafydd Sion Siams** Dafydd Jones (1743-1831)
***Dafydd y Garreg Wen** David Owen (1709-1739)
***Dagger** Thomas Wynford Rees (1898-1959)
***Dai Glan Tegid** David Roberts (1832-?)
***Dai'r Cantwr** David Davies (1812?–1874)
***Daniel Ap Gwilym** Daniel Morgan 
***Daniel Ddu o Geredigion / Daniel ab Ieuan Ddu o Geredigion**  Daniel Evans 
***Daniel Las** Daniel Silvan Evans (1818–1903)
***Darfab** John Walter Moore 
***Davies Aberpennar** Pennar Davies (1911-1996)
***Davydd Hael o Dowyn** David Jones (1768–1837)
***Deborah Maldwyn** Jane Hughes (1811-1880)
***Defynnog** David James (1865-1928)
***Degar** Parch. David Evans (1824-1884)
***Degwel** Peter Rees (1851–1931)
***Deheufardd** Dafydd Bowen (1829-1883)
***Deincodyn** William Rees 
***Deiniol Fychan** Evan Morgan
***Deiniol** Robert Jones 
***Deio'r Cantwr** David Jones (1803-1868)
***Delta / Delta Davies** R. D. Davies, Aberdâr (1826-1907)
***Derwenog** James Roberts 
***Dewi Afan** David Michael (1842-1913)
***Dewi Alaw** David Davies (1832-1914)
***Dewi ap Dewi**  David Davies (c.1824–1909), Tywyn
***Dewi ap Didymus** Dafydd Thomas (1782-1863)
***Dewi Arfon** David Hugh Jones (1833-1869)
***Dewi Awst**  David Davies, Tywyn
***Dewi Brefi** David Rowland (1782-1820)
***Dewi Dawel** David Evans (1814-1891)
***Dewi Dinorwig / Dewi Dinorwic** David Price (1804-1874)
***Dewi Dywyll / Deio'r Cantwr / Dewi Medi** David Jones (1803-1868)
***Dewi Ddu** David Davies, Merthyr
***Dewi Einion** David Lloyd Davies (-1881)
***Dewi Elfed** David Bevan Jones (1807-1863)
***Dewi Emlyn** David Davies (1817-1888)
***Dewi Emrys** David Emrys James (1881-1952)
***Dewi Fardd** David Jones 
***Dewi Glan Dulas** David Owen Morris (1853-1895)
***Dewi Glan Ffrydlas** David Evan Davies 
***Dewi Glan Peryddon** David Lloyd Davies (1830-1881)
***Dewi Gwenog** David Jenkins
***Dewi Gwyrfai** David John Owen (1877–1945)
***Dewi Haran** David Evans (1812-1885)
***Dewi Havhesp / Dewi Hafesb** David Roberts (1831-1884)
***Dewi Hefin** David Thomas (1828-1909)
***Dewi Heli** David Williams (1799-1869)
***Dewi Hiraddug** David Delta Evans (1866-1948) (hefyd **Ysbryd Llywelyn**)
***Dewi Idloes** David Davies 
***Dewi Idris** David Lewis, Abergynolwyn (1862-1888)
***Dewi Ioan** David Edwards (1828-1893) 
***Dewi Isan** David Edwards (1828-1873)
***Dewi Machno** David Jones, Penmachno (geni c. 1858-1931)
***Dewi Mai o Feirion** David John Roberts (1883-1956)
***Dewi Mawrth** David Jones (1845-1891), gweinidog Wesla
***Dewi Medi** David Lewis
***Dewi Meirion** David Edwards (1813-1897)
***Dewi Meirion** David Thomas, Fflint (1836-1906)
***Dewi Moelwyn** David Parry (1835-1870)
***Dewi Môn** David Rowlands (1836-1907)
***Dewi Nantbran** David Powell (-1781)
***Dewi o Ddyfed** David James (1803-1871)
***Dewi o Geredigion** David Samuel (1856-1921)
***Dewi Ogwen** David Roberts (1818-1897)
***Dewi Ogwy** David Thomas 
***Dewi Onllwyn** David Brace (1848–1891))
***Dewi Peris** David Michael Jones
***Dewi Pws** Dewi Grey Morris (1948-2024)
***Dewi Rhagfyr** David Jones, Aberdâr (1819?-1875)
***Dewi Silin** David Richards (1783-1826)
***Dewi Tecwyn** David Tecwyn Evans
***Dewi Teifi** Dewi Morgan (1877-1971)
***Dewi Tonau** D. G. Jones 
***Dewi Wnion** David Thomas (1800–1885)
***Dewi Wyllt** David Jones (1836-1878?)
***Dewi Wyn o Eifion** David Owen (1784-1841)
***Dewi Wyn o Essyllt** Thomas Essile Davies (1820-1891)
***Dewi** D. G. Jones 
***Dic Aberdaron** Richard Robert Jones (1780-1843)
***Dic Dywyll** Richard Williams (1805?–1865?)
***Dic Jones** Richard Lewis Jones (1934-2009)
***Dic Penderyn** Richard Lewis (1807/8-1831)
***Dic Treb** Richard O. Williams (mab Trebor Môn)
***Dic Tryfan** Richard Hughes Williams (1878?–1919)
***Dic Tŷ Capel** Richard Jones (1926–2003) (hefyd **Talybolion**) 
***Dic y Dawns** Abram Richard (fl. 1673-1700)
***Dicw** Yr Athro Richard Wyn Jones (g. 1966)
***Didymus ap Gwilym** Thomas Robert Marsden (1842-1899), Treffynnon
***Didymus ap Ioan** Thomas Jones 
***Digain** John Williams 
***Dinaswr o'r America** James Barr Walker 
***Dirwynydd** William Dykins (1831-1872)
***Diwygiwr, y** Evan John Roberts (1878-1951)
***Doctor Coch, y** Elis Prys (1512?-1595?)
***Dofwy** Richard Jones (1863-1956)
***Dora Eifion** Dorothy Jones
***Drem ap Dremhidydd** Gomer Williams (1847–1916)
***Druisyn** Parch. David Jones (1840-1902)
***Dryw, y** Edward Hughes (1772-1850)
***Dryw, y** Thomas Drew (1846–1925)
***Dryw Bach** Richard Williams (1790-1839)
***Dwyryd** William Phillip(s) (1849–1924)
***Dyfed / Dyfedfab** Evan Rees (1850-1923)
***Dyfnallt** John Dyfnallt Owen (1873-1956)
***Dyfrig** Evan Thomas Davies (1847-1927)
***Dyffrynferch** Mary Rees (mam **Ceridwen**)
***Dyn a'r Baich Drain, y** Richard Davies (1833-1877)
***Dyn Dall, y** Daniel Davies (1797-1876)

## E 
***E.O.J** Edward Owen Jones (1871-1953) englynwr a newyddiadurwr
***E. H. Frances** Thomas David Tecwyn Lloyd (1914-1992)
***Eben Fardd** Ebenezer Thomas (1802-1863)
***Echrysgythrawgollwch** Joseph Jones
***Edeirnion** Thomas Evan Roberts
***Edeyrn ap Nudd / Edeyrn o Fon** John William Hughes (1817-1849)
***Ednyfed** Frederick Evans (1840-1897)
***Edward Bach** Edward Dafydd
***Eglwysbach, yr** John Evans (1840-1897)
***Egryn** William Owen-Pughe (1759–1835) (hefyd **Gwilym o Feirion**, **Idrison** a **Meirion**)
***Egwisyn** Rowland Whittington
***Ehedydd Glan Taf** James James 
***Ehedydd Iâl** William Jones (1815-1899)
***Eiddil Gwenog** David Thomas, Blaenhirbant
***Eiddil Gwent** David Morris (1798-1878)
***Eiddil Ifor** Thomas Evan Watkins (hefyd **Emyr Llydaw** ac **Ynyr Gwent)**
***Eiddil Llwyn Celyn** George Lewis (1826?-1858)
***Eidiol Môn** Robert Eidiol Jones
***Eifion Wyn** Eliseus Williams (1867-1926)
***Eifionydd** John Thomas (1848-1922)
***Eigen o Wynedd** Emily Edwards
***Eilir** William Eilir Evans (1852-1910)
***Eilonydd** John Evans
***Einion Ddu** John Davies 
***Einion Mon** John Lloyd (1792-1834)
***Eirug** Tom Eirug Davies (1892-1951)
***Eirwyn Pontshân** Gwilym Eirwyn Jones (1922-1994)
***Elen Egryn** Elen Evans (1807-1876)
***Elerydd** William John Gruffydd (1916-2011)
***Elfed** Howell Elvet Lewis (1860-1953)
***Elfyn** Robert Owen Hughes (1858-1919)
***Elfynydd** James Kenward (fl. 1868)
***Elidir Sais** William Hughes Jones (1885-1951)
***Elidirfab** John Ellis Jones
***Elihu** W. Humphreys
***Elis o'r Nant** Ellis Pierce (1841-1912)
***Elis Wyn o Wyrfai** Ellis Roberts (1827-1895)
***Elis y Cowper** Elis (neu Ellis) Roberts (-1789)
***Eliza** Constantia Campbell 
***Ellis Bryncoch** Ellis Owen Ellis (1813-1861)
***Elphin** Robert Arthur Griffith (1860-1936)
***Elwyn** H. Elwyn Thomas 
***Emrys** William Ambrose (1813-1873)
***Emrys ap Iwan** Robert Ambrose Jones (1851-1906)
***Emrys Deudraeth** Emrys Roberts (1929-2012)
***Emyr H.** Emyr Davies (1878-1950)
***Emyr Llydaw** Thomas Evan Watkins (hefyd **Eiddil Ifor** ac **Ynyr Gwent**)
***EOJ** Edward Owen Jones (1871-1953)
***Eos Bradwen** John Jones (1831-1899)
***Eos Ceiriog** Huw Morys (1622-1709)
***Eos Clwyd** Thomas Pierce (c.1828–1865); John Jones (c.1828–1893); Robert Lloyd (c.1835–1901)
***Eos Crwst** Robert Owen 
***Eos Cymru** Sarah Edith Wynne (1842-1897)
***Eos Dar** Daniel Evans (1846-1915)
***Eos Derfel** David Davies
***Eos Ebrill** Edward Jones; Rees Lewis (1828-1880)
***Eos Ewyas / Eos Eyas** James Rhys Parry (fl. 1570?-1625?)
***Eos Glan Taf** Thomas Williams (1828–1909)
***Eos Glan Twrch** John Edwards (1806-1887)
***Eos Glyn Wyre** John Lewis (1836-1892)
***Eos Graianog** William Williams
***Eos Gwent** Thomas Edward Jones 
***Eos Gwynddwr** Robert Francis Kilvert (1840–1879)
***Eos Gwynedd** John Thomas (1742-1818)
***Eos Gwynfa** Thomas Williams (c.1769-1848)
***Eos Iâl** David Hughes (1794–1862)
***Eos Llechid** Owen Humphrey Davies (1828-1898)
***Eos Llyfnwy** Foulk Robert Williams (1774-1870);
***Eos Llyfnwy** Morris Roberts (c.1797-1876)
***Eos Maldwyn** Edward Hughes (?-1862)
***Eos Mawddwy** Robert Evans
***Eos Meirion** Ellis Roberts (1819-1873)
***Eos Morlais** Robert Rees (1841-1892)
***Eos Powys** Thomas Hughes (?–1867)
***Eos Prydain** Janet Patey
***Eos Tegeingl** Thomas Ellis (fl. 1824)
***Eos Twrog** Lewis Roberts (1756-1844)
***Eos Wyn** Edward Young
***Eos y Gogledd** William Owen Jones (1868-1928)
***Eos y Mynydd** Thomas Williams (c.1769-1848)
***Erfyl** Hugh Jones (1789-1858)
***Erfyl Fychan** Robert William Jones (1899-1968)
***Eryl Menai** T. Herbert Hughes (?-1913)
***Eryr Eryri** Owen Griffith (1839-1903)
***Eryr Eryrod Eryri** Watkin Williams Wynn
***Eryr Môn** Owen Prydderch Williams 
***Eryres Eurblu Eryri** Margaret Jones
***Eryron Gwyllt Walia** Robert Owen (1803-1870)
***Esgair Gawr** Dr William Williams (1855/6–1911)
***Estyn, yr** Thomas Richard Lloyd (1820-1891)
***Esyllt Wyn** Mary Oliver Jones (1858-1893)
***Eta Delta** Evan Davies (1794-1855)
***Eugenius Philalethes** Thomas Vaughan 
***Euoe** Trevor Mansell 
***Eurfab** David Davies, Aberdâr 
***Eurfel** Henry Davies, Penrhiwceiber
***Eurfryn** John Grey 
***Euros** Ben Bowen (1878–1903)
***Evan y Gorlan** Evan Jones (1787-1859)
***Evans Bach Nantyglo** Evan Evans (1804–1886)
***Ewyllysiwr Da** John Jones

## F 
***F'ewyrth Huw** Owen Morgan Edwards (1858–1920)
***Foelallt** John Morgan Jones (1838–1921)

## Ff 
***Fferyllfardd** William Morgan Williams (1832–1877)
***Ffestinfab** William Jones bu f 1915
***Ffumerydd** Elias Jones

## G 
***G R** Richard Roberts 
***Gaerwenydd** John Pritchard (1837–1898)
***Garmonydd** Humphrey Bradley Jones (1840-1904)
***Garthwyson** William Millward (1856–1920)
***George Eliot** Mary Ann Evans
***Geraint Llifon** Geraint Lloyd Owen (g. 1941)
***Gerallt** J. R. Jones, Maentwrog
***Gethin** Dulais Gethin Davies (1846-1896)
***Gethin** Hugh Hughes, 
***Gethin** Owen Gethin Jones (1816-1883)
***Geufronydd** John Geufronydd Jones (1863–1960)
***Gilbart** W. Gilbert Williams
***Giraldus** John Rowlands (1824–1891) 
***Giraldus** Owen Griffith (1832-1896)
***Glan Aberbechan** John Hughes (1775–1854)
***Glan Afan** Llewelyn Griffiths 
***Glan Alaw** Richard Jones (1838-1925)
***Glan Alun** Thomas Jones (1811-1866)
***Glan Barlwyd** David Jones, Ffridd, Ffestiniog
***Glan Caledffrwd** Morris D. Jones (fl. 1972)
***Glan Cledwen** R. H. Roberts 
***Glan Collen** Robert Hughes
***Glan Cymerig** Owen R Lewis, Y Bala 
***Glan Cunllo** David Davies (1838–1867)
***Glan Dyfi** Thomas John Pritchard (1853–1918)
***Glan Efyrnwy** John Hughes (1775–1854)
***Glan Erch** Henry Parry
***Glan Menai** Griffith Jones
***Glan Padarn** Thomas David Thomas (1848–88)
***Glan Pair**  Y Parch. David Scriven Thomas (1842–1920)
***Glan Pherath** Thomas Hughes (1803-1898)
***Glan Rhyddallt** Isaac Samuel Lloyd (1875-1961)
***Glan Taf** D. J. Beynon 
***Glanaraeth** H. Richards 
***Glanberach** John Jenkyn Morgan (1875-1961)
***Glancaledffrwd** Benjamin Jones 
***Glanceri** John Newton Crowther (1847-1928)
***Glanfryn** R. G. Williams (1858-1947)
***Glanffrwd** William Thomas (1843-1890)
***Glangwynfarch** J. Parry 
***Glanllafar** William Robert Edwards (1858-1921)
***Glanmor** John Williams (1811-1891)
***Glanwyllt** David Jones
***Glanygors** John Jones 
***Glanystwyth** John Hughes (1842-1902)
***Glasgoed** Owen Hughes (1879-1947)
***Glasifor** William Williams (1859-1934)
***Glaslyn** Richard Jones Owen (1831-1909)
***Glasynys** Owen Wynne Jones (1828-1870) (hefyd **Gwyndaf Hen / Caersallwg** a **Salmon Llwyd**)
***Glun Bren, y** Rhys Davies (1772–1847)
***Glyn Myfyr** Evan Williams 
***Glynfab** W. G. Williams
***Gogrynwr** Thomas Jones (1822-1854)
***Gohebydd, y** John Griffith (1821-1877)
***Golden Farmer** William Davis (1627-1690)
***Goleufryn** William Richard Jones (1840-1898)
***Golyddan** John Robert Pryse (1840-1862)
***Gomer** Joseph Harris (1773-1825) (hefyd **Cyfaill Babanod**)
***Gomerydd** Samuel Evans (1793-1856)
***Gomerydd** J. Rowland Jones 
***Gorfyniawc o Arfon** John Williams (1814-1878)
***Goronva Camlan** Rowland Williams 
***Goronwy Ddu o Fôn** Goronwy Owen (1723-1769)
***Goronwy Ddu o Geredigion** J. Mathias
***Goronwy Fychan / Vaughan / Vychan** Goronwy Vaughan Lewis (1877–1928)
***Gorswg** Lewis Jones (1829–1902) 
***Graienyn** William Jones, Rhydymain
***Grawerth** William Davies
***Gruffydd Glan Gwynion** Griffith Jones 
***Gruffydd Rhisiart / Gruffydd Risiart / GR** Richard Roberts (1810-1883)
***Gurnos** Evan Jones (1840-1903)
***Guto Nyth Bran** Griffith Morgan (1700-1737)
***Gutyn Arfon** Griffith Hugh Jones (1849-1919)
***Gutyn Ebrill** Griffith Griffiths (1828–1909)
***Gutyn Padarn** Griffith Edwards (1812-1893)
***Gutyn Peris** Griffith Williams (1769-1838)
***Gwaenfab** Robert Roberts (1839-1914)
***Gwalchmai** Richard Parry (1803-1897)
***Gwalch Ebrill** Daniel James (1846-1894)
***Gwallter Dyfi** Edward Walter Rees
***Gwallter Mechain** Walter Davies (1761-1849)
***Gwaenfab** Robert Roberts, Y Bala (1839-1914)
***Gwaenydd** William R. Jones, Blaenau Ffestiniog a Phatagonia
***Gwaenys** Edward Jones, Lerpwl
***Gweinidog Ieuanc yn Nghorph y Wesleyaid** Thomas Jones, 2il 
***Gweinidog o Eglwys Loegr** Griffith Jones 
***Gweirydd ap Rhys** Robert John Pryse (1807-1889)
***Gwenallt** David James Jones (1899-1968)
***Gwenallt** Thomas Morris Jones (1859-1933)
***Gwenffrwd** Thomas Lloyd Jones (1810-1834)
***Gwenithyn** Joseph Larke Wheatley (1846–1932)
***Gwenogvryn** John Gwenogvryn Evans (1852–1930)
***Gwenrhian Gwynedd** Fanny M. K. Bulkeley-Owen (1845-1927)
***Gwentwyson** Ezekiel Davies (1842–1891)
***Gwentydd** John Bevan
***Gwenynen Gwent** Augusta Hall, Arglwyddes Llanofer (1802–1896)
***Gwenynen y Ceiri** Elizabeth Edwards 
***Gwerfulun** Thomas Robert Jones
***Gwerinfab''' James ('Jim') Griffiths (1890–1975)
***Gwernfab** John Richard Jones (m.1923)
***Gwernogle** Thomas David (Gwernogle) Evans (1853-1940)
***Gwernydd**  David (Gwernydd) Rees (1845–1928)
***Gweryddon** Hugh Evans (1812-1902)
***Gwesyn** Rhys Gwesyn Jones (1826–1901)
***Gwili** John Jenkins (1872-1936)
***Gwilym ab Elis** William Ellis (1752-1810)
***Gwilym ab Ioan** William Williams (1800-1868)
***Gwilym ab Ioan** William Jones 
***Gwilym ab Iorwerth** William Williams (c.1800-1859)
***Gwilym Alaw** William Owen (1760?-1842?)
***Gwilym Alltwen** William Williams 
***Gwilym Aman** Gwilym Richard Jones (1874-1953) 
***Gwilym Aman Gwilym** Richard Jones (1874-1953)
***Gwilym ap Gruffydd** William Griffith
***Gwilym ap Gwilym** William Parry James (1854/5–1935)
***Gwilym ap Rhys** William Williams (c.1804–1865) 
***Gwilym Aran** William Roberts
***Gwilym Ardudwy** William Lewis (1852-86)
***Gwilym Berw** William Lewis (1845-1917)
***Gwilym Cadfan** William Jones (1726-1795)
***Gwilym Caledfryn** William Williams 
***Gwilym Caledffrwd** William Griffith (1832-1913)
***Gwilym Callestr** William Edwards (1790-1855) (hefyd **Wil Ysgeifiog**)
***Gwilym Cawrdaf** William Ellis Jones
***Gwilym Cerdyn** William Griffiths
***Gwilym Cowlyd** William John Roberts (1828-1904)
***Gwilym Cyfeiliog** William Williams (1801-1876)
***Gwilym Deulwyn** William Bassett (1850–1939)
***Gwilym Ddu Glan Hafren** William Owen (1788-1838)
***Gwilym Deudraeth** William Thomas Edwards (1863-1940)
***Gwilym Dyfi** William Davies (1862–1937)
***Gwilym Ddu o Arfon** William Williams 
***Gwilym Ddu o Fôn** William Morris (1707-1763) 
***Gwilym Ddu o Went** William Gomer James (1837–1918)
***Gwilym Elian** William Cosslett 
***Gwilym Elli** William Williams 
***Gwilym Eryri** William Roberts (1844-1895?)
***Gwilym Ganoldref** William Midleton (neu Myddelton) (c. 1550-c. 1600)
***Gwilym Garwdyle** William Harri (1763-1844)
***Gwilym Gellideg** William Morgan (1808-1878)
***Gwilym Glan Llwchwr** William Owen (1841-1902)
***Gwilym Glan Taf** William Edmunds 
***Gwilym Glanffrwd** William Theophilus Thomas
***Gwilym Grawerth** William Davies (1804-1836)
***Gwilym Gwalstawd Ieithoedd** William Thomas (fl. c. 1685?-c. 1740?)
***Gwilym Gwenffrwd** William Theophilus Thomas (1824-1899)
***Gwilym Gwent** William Aubrey Williams (1838-1891)
***Gwilym Hiraethog** William Rees (1802-1883)
***Gwilym Iago** William James, Dinas, Y Rhondda
***Gwilym Idan** William Williams
***Gwilym Ilid** William Jones 
***Gwilym Lerpwl** William Griffiths (1849-1890)
***Gwilym Lleyn** William Rowlands (1802-1865)
***Gwilym Llugwy** William Owen
***Gwilym Maesaleg** William Thomas 
***Gwilym Mai** William Thomas (1807-1872)
***Gwilym Marles** William Thomas (1834-1879)
***Gwilym Medi** William Williams 
***Gwilym Menai** William John Walford, Bangor, adroddwr bu farw yn y Rhyfel Mawr (1885-1917)
***Gwilym Meudwy** William Owen (1841-1902)
***Gwilym Môn** William Hughes 
***Gwilym Morganwg** Thomas Williams (1778–1835)
***Gwilym Myrddin** William Jones (1863-1946)
***Gwilym o Feirion** William Owen-Pughe (hefyd **Egryn**, **Idrison** a **Meirion**)
***Gwilym o Fôn** William Williams Jones (c.1826–1903) 
***Gwilym Ogwen** William (Ogwen) Jones (1838-1863)
***Gwilym Padarn** William Edwards (1786-1857)
***Gwilym Pennant** William Powell (1830-1902)
***Gwilym Peris** William Williams (1769-1847)
***Gwilym Peris** William John Davies (1888-1957)
***Gwilym Pont Taf** William Parry 
***Gwilym Rhondda** William Phillip Thomas (1861-1954) 
***Gwilym Rhug** William Edward Williams, dramodydd, bardd, Cofiadur yr Orsedd (1879-1931)
***Gwilym Rhys** Gwilym Rhys Roberts (1911-1990)
***Gwilym Tawe** William Morris
***Gwilym Teilo** William Davies (1831-1892)
***Gwilym Tew o Lan Taf / Gwilym Tew** William Moses (1742-1824)
***Gwilym Twrog** William Williams (1763-1836)
***Gwilym Wyn** William Jones 
***Gwr Llyg** Syr James Allan Park 
***Gwrgant** William Jones (1803-1886)
***Gwrnerth** Thomas Stephens (1821-1875) (hefyd **Gwyddon**)
***Gwrtheyrn** Griffith Roberts (1846-1915)
***Gwrwst ab Bleddyn Flaidd** Evan Jones (1793-1855)
***Gwybedyn** Rowland Jones (fl. 1780au)
***Gwydderig** Richard Williams (1842-1917)
***Gwyddon** Thomas Stephens (1821-1875) (hefyd **Gwrnerth**)
***Gwyddonfryn** William Price 
***Gwyddonwyson** David Rhys Stephen (1807-1852)
***Gwylfa** Richard (Gwylfa) Roberts (1871–1935)
***Gwyllt y Mynydd** William Hugh Evans (1831-1909)
***Gwyn Erfyl** Gwyn Erfyl Jones (1924-2007)
***Gwyndaf** Evan Gwyndaf Evans (1913-1986)
***Gwyndaf** Griffith Davies (1868-1962)
***Gwyndaf Eryri** Richard Jones (1785-1848)
***Gwyndaf Hen / Caersallwg** Owen Wynne Jones (hefyd **Glasynys** a **Salmon Llwyd**)
***Gwyndaf Ieuanc** Hugh Jones (fl. 1812)
***Gwynedd** Thomas Edwards (1844-1924)
***Gwyneddon** John Davies (1832-1904)
***Gwyneddon** Robert Davies 
***Gwyneth Vaughan** Annie Harriet Hughes (1852-1910)
***Gwynfor** Thomas Owen Jones (1875-1941)
***Gwynfryn** David (Gwynfryn) Jones (1867-1954)
***Gwynionydd** Benjamin Williams (1821-1891)
***Gwynod** Hugh Lunt (1872-1941)
***Gwynrudd** Aaron Morgan 
***Gwyrosydd** Daniel James (1847-1920)
***Gymraes o Ganaan, y** Margaret Jones (1842?-1902)

## H 
***Hafrenydd** Thomas Williams (1807-1894)
***Hamlet** Daniel Rees 
***Hampden** Samuel Etheridge 
***Harri Bach o Graig-y-Gath** Harri Parri (1709?-1800)
***Harri Ddu** Henry Wood (-c.1883)
***Harri Ddu o Ddyfed** Henry Evans (c.1801–1841)
***Harri Evan** William Henry Evans (fl. diwedd yr 17g)
***Harri Myllin** Henry Rowlands (1832-1903)
***Hawen** David Adams (1845–1922)
***Hedd Wyn** Ellis Humphrey Evans (1887-1917)
***Helen o Fôn** Jane Helen Rowlands (1891-1955)
***Heman Gwent** Edward Evans (1823-1878)
***Hen Berson, yr** Thomas Jones
***Hen Ficer, yr** Rhys Prichard (1579-1644)
***Hen Rech Flin** David Alwyn (ap Huw) Humphreys (g. 1959)
***Hen Wyliedydd** William Davies (1820-1875)
***Henry Menevensis** Henry Wilcox (1813?-1876)
***Hesba Stretton** Hannah Smith 
***Hiraddug** R. E. Williams
***Hiraethlawn** Thomas William 
***Hirlas** Daniel Silvan Evans (1818–1903)
***Homo Ddu** Richard Lewis (Smith) (brawd **Homo Ddu** John Wyndham Lewis)
***Homo Ddu** John Wyndham Lewis (1837–1895) (brawd **Homo Ddu** Richard Lewis (Smith))
***Homo Môn** Thomas Richard Owen
***Hooker** John Jenkins (1770-1829)
***Hopcyn Lemuel** John Hopkin James (1874-1937)
***Hu Eryri** Hugh O. Hughes, Llanfairfechan
***Humilis** John Jones (1818-1869)
***Hunan-Lywydd (Self-Controller)** Morgan Evans 
***Huw ab Ioan** Hugh Jones 
***Huw Derfel** Hugh Hughes 
***Huw Llangar** Hugh Samwel 
***Huw Menai** Huw Owen Williams (1888-1961)
***Huw Myfyr** Hugh Jones (1845-1891)
***Huw Tegai** Hugh Hughes (1805-1864)
***Huwco Meirion** Hugh Evan Thomas (1830-1889)
***Huwco Môn** Hugh Owen (1835-1892)
***Hwfa Môn** Rowland Williams (1823-1905)
***Hwsmon, yr**  Robert Williams Parry (1884–1956)
***Hywel ap Gwilym** Howell Williams 
***Hywel Cefni** Hugh Evan Jones (1859–1941)
***Hywel Cernyw** Hugh Williams (1843-1937)
***Hywel Cynon** Thomas Howells (1839-1905)
***Hywel Eryri** Hugh Evans, Penygroes (1767-1841?)
***Hywel Tudur** Howell Roberts (1840-1922)

## I 
***I Gwynoro** J. Davies
***I. D. Ffraid** John Evans (1814-1875) (hefyd **Adda, Adda Jones**)
***Iago ap Dewi** James Davies (1648-1722)
***Iago ap Dewi** James Davies (1800-1869)
***Iago ap Iago** James James (1818-1843)
***Iago Bencerdd** James Hughes (1831-1878)
***Iago Emlyn** James James (1800-1879)
***Iago Erfyl** Thomas Davies James (1862-1927)
***Iago Mochnant** James Jones (fl. 19g)
***Iago Prytherch** Ronald Stuart Thomas (1913-2000)
***Iago Trichrug** James Hughes (1779-1844)
***Ian Maclaren** John Watson 
*'''Ianto'r Castell** Evan Bevan (1803-1866)
***Idanfryn** John Hughes (1832-1876)
***Idloeson** John Pryce 
***Idris / Thomas Idris** Thomas Howell Williams A.S.
***Idris Fychan** John Jones (1825-1887)
***Idrison** William Owen-Pughe (1759-1835) (hefyd **Egryn**, **Gwilym o Feirion** a **Meirion**)
***Idriswyn** Edward Thomas (1847-1906)
***Idrisyn** John Jones (1804-1887)
***Ieuan ab Iolo Fardd Glas** Evan Williams 
***Ieuan Aeron** Evan A. Jones
***Ieuan Alwen** Evan Evans
***Ieuan ap Dewi** Evan Davies 
***Ieuan ap Iago** Evan James (1809-1878)
***Ieuan ap Rhisiart** Evan Pritchard (1769-1832)
***Ieuan Awst** John Pugh (1783-1839)
***Ieuan Brydydd Hir** Evan Evans (1731-1788) (hefyd **Ieuan Fardd**)
***Ieuan Buallt** Evan Jones (1850-1928)
***Ieuan Cadfan** Evan Breece
***Ieuan Cadfan** David Jones 
***Ieuan Ddu** John Thomas (1795-1871)
***Ieuan Ddu Alltwen** John Jones Davies
***Ieuan Ddu o Lan Tawy** John Ryland Harris (1802-1823)
***Ieuan Dwyfach** Evan Griffith (brawd Owen Griffith (Giraldus))
***Ieuan Dyfi'' Evan Jones, Caernarfon
***Ieuan Ebblig** Evan Griffiths (1795-1873)
***Ieuan Eifion** Evan Jones,  Y Plas, Chwilog (c.1837-1913)
***Ieuan Fardd** Evan Evans (1731-1788) (hefyd **Ieuan Brydydd Hir**)
***Ieuan Fardd Ddu** Evan Thomas (1733-1814)
***Ieuan Ferddig** John Garnon
***Ieuan Glan Alarch** John Mills (1812-1873)
***Ieuan Glan Edog**: Evan Richard (1842–1916)
***Ieuan Glan Geirionydd** Evan Evans (1795-1855)
***Ieuan Glan Mellte** Evan Evans 
***Ieuan Glyn Cothi** Evan Jones (c.1848–1897)
***Ieuan Griffiths** David Matthew Williams (1900-1970)
***Ieuan Gorwydd** Evan Price, Gweinidog Penuel, Glyn Ebwy (1865-1923)
***Ieuan Gryg** Evan Meredith 
***Ieuan Gwyllt** John Roberts (1822-1877)
***Ieuan Gwynedd** Evan Jones (1820-1852)
***Ieuan Ionawr** Evan Jones, Dolgellau (?1845-?1900)
***Ieuan Lleyn** Evan Pritchard (1769-1832)
***Ieuan Meurig** Evan Morris (c.1838–1885)
***Ieuan Myfyr** Evan Davies (1801-1888) (hefyd **Myfyr Morganwg**)
***Ieuan Myhefin** John Davis 
***Ieuan Nebo** Evan Jones (1854-1910)
***Ieuan o Arfon** Evan Griffiths
***Ieuan o Eifion** Evan Griffiths 
***Ieuan o Geredigion** Evan E Roberts 
***Ieuan o Leyn** John Henry Hughes (1814-1893)
***Ieuan Tudur** Evan Thomas 
***Ieuan y Foelas** Evan Thomas (1851–1899) 
***Ifan Afan** E. H. Jenkins 
***Ifan y Gorlan** Evan Jones (1787-1859) 
***Ifander** William Griffiths (1830-1910)
***Ifano** James Ifano Jones (1865-1955)
***Ifor Ceri** John Jenkins (1770-1829)
***Ifor Cwmgwys** John Thomas (1813–1866)
***Il Taliessen Di Monmouth** Thomas Powell 
***Impartiall Pen** John Davis 
***Index** Dafydd Rhys Williams (1851-1931)
***Ioan ab Gwilym** John Williams 
***Ioan ab Hu Feddyg** John Pughe (1815-1874)
***Ioan ab Hywel** John Howell (1774-1830)
***Ioan ab Hywel** John Howell (hefyd **Ioan Glandyfroedd**)
***Ioan ab Iago** John James (fl. ail hanner y 18g)
***Ioan ab Ioan** John Williams (1800-1871)
***Ioan ap Gwilym** John Williams (1728-1806)
***Ioan Arfon** John Owen Griffith (1828-1881)
***Ioan Brothen** John Jones (1868-1940)
***Ioan Bryngwyn Bach** John Jones (1818-1898)
***Ioan Callestr** John Nuttall
***Ioan Ceifiog** Parch. John Hugh Evans 'Cynfaen' (1833-1886)
***Ioan Ceri** John Jenkins (1770-1829)
***Ioan Dyfnan**  John Owen (1944/5–2023), Llangefni
***Ioan Dderwen o Fôn** John Parry
***Ioan Ddu** John Foulkes Jones (1837-1889)
***Ioan Eifion** John Jones 
***Ioan Elias** John Elias Jenkins 
***Ioan Emlyn** John Emlyn Jones (1818-1873)
***Ioan Eryri** John William Jones (1856–1931)
***Ioan Glan Dyfrdwy** John Page (1830?-1852)
***Ioan Glan Menai** John Jones 
***Ioan Glan Towy** John Richards 
***Ioan Glandyfroedd** John Howell (1774-1830) (hefyd **Ioan ab Hywel**)
***Ioan Gwent** John Watkins 
***Ioan Idris** John Idris Davies (1821-1889)
***Ioan Llewelyn Huw** John Llewellyn Hughes
***Ioan Llynau** John Evans
***Ioan Machno** John Price Jones (1821-1879)
***Ioan Madog** John Williams (1812-1878)
***Ioan Madyn** John Fox 
***Ioan Maethlu** William Jones 
***Ioan Mai** John Williams (1823-1887)
***Ioan Meirion** John James (1815-1851)
***Ioan Moelwyn** John Gruffydd Hughes (1866–1944)
***Ioan Môn / Ioan o Fôn** John Hughes Llangefni
***Ioan Mynyw** John Lewis, Tregaron
***Ioan Pedr** John Peter (1833-1877)
***Ioan Powys** John Owen
***Ioan Rhagfyr** John Williams (1740-1821)
***Ioan Siengcin** John Jenkin (1716-1796)
***Ioan Tachwedd** John Evans (1790-1856)
***Ioan Tegid** John Jones (1792-1852)
***Iocyn Ddu** John Richards (1795-1864)
***Iolo Caernarfon** John John Roberts (1840-1914)
***Iolo Fardd Glas (Morgannwg)** Edward Williams (1768-1854)
***Iolo Morganwg** Edward Williams (1747-1826)
***Ioan Tegid** John Jones (1792-1852) (hefyd **Tegid**)
***Iolo Trefaldwyn** Edward Davies (1819-1887)
***Ionawryn** Ionawryn Williams 
***Ionoron Glan Dwyryd** Rowland Walter (1819-1884)
***Iorthryn Gwynedd** Robert David Thomas (1817-1888)
***Iorwerth Alaw** Edward Howells (1838–1913)
***Iorwerth ap Huw** Edward Davies
***Iorwerth Ceitho** Edward Jones (1838?-1930)
***Iorwerth Glan Aled** Edward Roberts (1819-1867)
***Iorwerth Goch** Thomas Edwards 
***Iorwerth Goes Hir** Edward Jones (1824-1880)
***Iorwerth Pentyrch** Edward Gittins (-1884)
***Iorwerth Twrog** John Edward Jones (1886-1934)
***Iota Eta** John Evans
***Isalaw** John Richards (1843-1901)
***Isaled** Morris Owen, Caernarfon
***Isalun** Thomas Hughes, Caernarfon
***Isallt** Robert Roberts (1839-1914)
***Isawel** John Thomas Job (1867–1938)
***Isfoel** Dafydd Jones (1881-1968)
***Isfryn** John Davies (1861-1948)
***Isfryn** Rees Rees 
***Islwyn** William Thomas (1832-1878)
***Isnant** Edward Harker (1866-1969)
***Isylog** Enoch Jones (1887-?)
***Ivon** John Jones (1820-1898)
***Ivor Cwmgwys** John Thomas 
***Ivor Emlyn** John Williams 
***Ivor Novello** David Ivor Davies (1893-1956) 
***Iwan** David Williams (1796-1823)

## J 
***J. J.** John James Williams (1869-1954)
***J. J. Drefnewydd** Joseph Jones (1856–1941/1942)
***J. R.** John Roberts
***Jac Glan-y-gors** John Jones (1766-1821)
***Je Aitsh** J. H. Jones (1860-19)
***Jeduthyn** Robert James (1825-1879)
***Jim Parc Nest** Thomas James Jones (g. 1934)
***Jo Llwyn** J. O. Jones (actor) (1931–2011)
***Joannes Towy/Johannes** John Jones (1821?-1883)
***John Aelod Jones** John Roberts Williams (1914-2004)
***John Eilian** John Tudor Jones (1904-1985) (hefyd **Robin Bwrgwyn**)
***John y Gwas** John Evans (1877-1958)

## K 
***Keinion** Y Parch. William (Keinion) Thomas (1856–1932)
***Keri**  Evan Keri Evans (1860–1941)
***Kilsby / Kilsby Jones** James Rhys Jones (1813-1889)
***Kitchener / Kitch** James (Kitchener) Davies (1902-1952)

## L 
***Leander** John Jones (1575-1636)
***Lefiad, y** William Williams (fl. 1853)
***Leila Megàne** Margret Jones (Roberts pr1) (Hughes pr2)
***Leon** William Downing Evans (1811–1897)
***Leonidas** Harry Wood Southey 
***Lesbardd** Les Barker (1947-2023), bardd a Wicipediwr
***Lewis Glan Dyfi** Parch Lewis Meredith (W)
***Lewis Glyn Cynon** Lewis Davies (1863-1951)
***Lewsyn yr Heliwr** Lewis Lewis (1793-1847)
***Lewys Aran** Lewis Roberts, Dolgellau (1861-1879)
***Lewys Egryn** Y Parch. Lewis Williams (1810-1884)
***Lewys Glyn Dyfi / Lewis Glyn Dyfi** Lewis Meredith (1826-1891)
***Lewys Shanco Lewis** Lewis Lewis (1793-?)

## Ll
***Llaethferch** Mary Jane Evans (1888-1922)
***Llais y Werin** Hannen Swaffer
***Llallawg** Thomas James (1817-1879)
***Llanbrynmair Farmer** Samuel Roberts (hefyd **SR**)
***Llanerchydd** Thomas Parry (1809-1874)
***Llawdden** David Howell (1831-1903)
*'''Llef o'r Nant** John Jones (1775-1834)
***Llef y Tlawd** David Jones 
***Lleurwg** John Rhys Morgan (1822-1900)
***Llew Llwyfo** Lewis William Lewis (1831-1901)
***Llew Madog** Evan Morgan (1846-1920)
***Llew Meirion** Edward Williams
***Llew Meirion** Owen Richard Owen
***Llew Tegid** Lewis Davies Jones (1851-1928)
***Llewelyn** Lewis Evans, Gwanas, Brithdir
***Llewelyn Alaw** Thomas David Llewelyn (1828-1879)
***Llewelyn Ddu o Fôn** Lewis Morris (1701-1765)
***Llifon** William Griffith Owen (1857-1922)
***Llinos** Maria Jane Williams (1795–1873)
***Llinos Manod** Kate Ann Jones (Evans ar ôl priodi) (fl 1915-40)
***Llinos Maria** Jane Williams (1795-1873)
***Llinos Morgannwg** Susannah Wesley Rees (née Davies)
***Llinos Wyre** W. H. Griffiths 
***Llwyd Fryniog** John Lloyd Nuttall
***Llwyd Llangathen** D. Lloyd Isaac
***Llwyd o'r Bryn** Robert Lloyd (1888-1961)
***Llwydlas** William J. Roberts
***Llwynrhudol** David Thomas Roberts 
***Llyfnwy** Thomas Morgan 
***Llyfrbryf, y** Isaac Foulkes (1836-1904)
***Llyfrbryf Meirion** J. Lloyd Jones
***Llyfrbryf Wesleyaidd, y** John Marsden, Treffynnon (1845-?)
***Llysfoel** O. D. Williams
***Llystyn** R. Jones
***Llywarch Cynllwyd** Thomas Edwards (1803-1835)
***Llywarch Mon** Benjamin Evans 
***Llywel** Jonathan Davies (1796-1831)
***Llywelyn Twrog** Lewis Edwards (1832-1861)

## M 
***Mab Cernyw** John Hobson Mathews (1858-1914)
***Mab Dewi Ddu** J. P. Davies
***Mabon** William Abraham (1842-1922)
***Machno** Robert Owen (hefyd **R. O. Machno**)
***Machno** Richard Humphreys (1853-1900)
***Machraeth Môn** Owen Williams 1854-1900
***Mad Jack** John Mytton (1796-1834)
***Maelog** Arthur James Johnes (1809–1871)
***Maenhir** Allen Upward 
***Mafoniog** John Edwards 
***Mai o Fôn** May Elizabeth Hughes (1892-1964)
***Mair Eifion** Mary Davies (1846-1882)
***Mair Gwynedd** Mary Elizabeth Newell
***Mair Hydref** Mary Jane Owen (Williams ar ôl priodi)
***Maldwyn** Thomas Price (1860-1933)
***Mallt Williams** Alice Matilda Langland Williams (1867-1950)
***Mam o Nedd** Winifred Margaret Combe-Tennant
***Manodfab** Samuel Jenkins 
***Manoethwy** Owen Jones (1838-1866)
***Margam** William Morgan Jones (1864-1945)
***Marged Mochnant** Margaret Elizabeth Evans, Cwm Penmachno
***Mari'r Fantell Wen** Mary Evans (1735-1789)
***Marie Trevelyan** Emma Mary Thomas (Mrs Paslieu) (1853-1922)
***Marmora** David William Morris (1823-1914)
***Mary Fitt** Kathleen Freeman (1897-1959)
***Mathetes** John Jones (1821-1878)
***Mavonwy** T. Davies
***Mawddwy** Parch. John Jones (1842-1922)
***Mechellydd Môn** J. R. Hughes
***Megan Ellis**  Jane Myfanwy Eames (née Hughes) (-1955)
***Megan Telini** Maggie Jane Parry
***Meigant** Robert Jones
***Meilir** Hugh Owen (1822-1892)
***Meilir Môn** David Milton Aubrey 
***Meilir** **Wyn** Griffith Gwynedd Hughes (1879–1948)
***Meinwen Elwy** Margaret Davies (1816-1884)
***Meinydd** R. Roberts 
***Meiriadog** John Edwards (1813-1906)
***Meirion** William Owen-Pughe (1759-1835) (hefyd **Egryn**, **Gwilym o Feirion** ac **Idrison**)
***Melissa** Jane Brereton (1685-1740)
***Menaifab** Edward Hughes, Felinheli
***Menander** Charles Langbridge Morgan
***Mephiboseth** John Jones (1850-1926)
***Merch i Lafurwr** Barbara H. Farquhar 
***Mervinian** Richard Evans, Croesoswallt
***Meudwy Glan Elai** Evan Richards
***Meudwy Glan Taf** Benjamin Bowen (1802-1882)
***Meudwy Môn** Owen Jones (1806-1889)
***Meurig Ebrill** Morris Davies (1780-1861)
***Meurig Glan Mawddach** Morgan Davies (-1853?)
***Meurig Idris** Morris Jones
***Meurig Wyn** M. T. Morris
***Meuryn** Robert John Rowlands (1880-1967)
***Minclwyd** R. Griffiths 
***Minimus** John Roberts (1808-1880)
***Moelona** Elizabeth Mary Jones (1878-1953)
***Moelwyn** John Gruffydd Moelwyn Hughes (1866–1944)
***Moelwynfab** Robert Stephen (1828–1879) Heddwas yng Nghonwy
***Moelwynfardd / Moelwyn Fardd** Robert Roberts, Tanygrisiau (bu farw 1883)
***Moi Plas** Morris Davies (1891-1961)
***Monallt** H. Roberts (1900-?)
***Monwyson** William Evans (1834-1897)
***Mor Meirion** Richard Williams Morgan (c.1815-c.1889)
***Morfab** William Thomas 
***Morfin** Parch. Griffith Owen Roberts (1867-1950)
***Morfudd Eryri** Anna Walter Thomas (Fison) (1839-1920)
***Morgan ab Ioan Rhus** Morgan John Rhys (1764-1804)
***Morgrugyn Machno** Morgan Richards 
***Morien** Owen Morgan (1836?-1921) (hefyd **Owen of Wales**)
***Morien Môn** Morien Môn Huws (1856-1932)
***Morlaisa** Annie Gwladys Samuel 
***Morleisfab** J. B. Rees 
***Morlwyd** Edward Williams
***Morswyn** S. J. Griffiths (1850-1893)
***Morus Cyfannedd** Morus Jones (1895-1982)
***Morus Glaslyn** Thomas Evans Morris (1863–1952)
***Moses Bach** John Thomas 
***Munullog** Robert Jones Derfel 
***Mwrog Bach** Joseph Edward Roberts
***Myddfai** John Davies (1823-1874)
***Myfyr, y** Watkin B, Joseph
***Myfyr Emlyn** Benjamin Thomas (1836-1893)
***Myfyr Gwent** Yr Athro T. Witton Davies, Bryn Haul, Bangor
***Myfyr Hefin** David Bowen (1874-1955)
***Myfyr Machno** John Evans
***Myfyr Morganwg** Evan Davies (1801-1888) (hefyd **Ieuan Myfyr**)
***Myfyr Twrch** Thomas Titus Mathias (1876–1922)
***Myfyr Twrog** John Evans
***Myfyr Wyn** William Williams (1849-1900)
***Myllin** John Jones (1800-1826)
***Mynorydd** William Davies (1826-1901)
***Mynyddig** Robert Hughes 
***Mynyddog** Richard Davies (1833-1877)
***Mynyddwr** Alfred Thomas
***Myrddin Ddu** Herbert Jones
***Myrddin Fardd** John Jones (1836-1921)

## N 
***Namorydd** Thomas John Jones, Nantmor ac Awstralia (1857-1939)
***Nantlais** William Nantlais Williams (1874–1959)
***Nathan Dyfed** Jonathan Owain Reynolds (1814-1891)
***Nathan Wyn** Jonathan Rees (1841-1905)
***Native of the Principality** Angharad Llwyd (1780–1866)
***Ned Môn** Edward Jones
***Nefydd** William Roberts (1813-1872)
***Nel Wyn** Lewis Davies Jones (Llew Tegid)
***Neifion** John (Glyn) Davies (1848/9–1917)
***Nicander ** Morris Williams (1809-1874)
***Niclas y Glais** Thomas Evan Nicholas (1878-1971)
***Nicola** Nicholas Bennett (1823–1899)
***Nimrod** Charles James Apperley (1778–1843)
***Noblesse Oblige** Howard Evans 
***Nodwr** David Thomas Jones
***Noddfanyn** Edward Jones, Penygraig, Dorowen
***Northyn** William G. Williams, Lwyngwril

## O 
***O ap Harri** O. Parry
***Obadiah** Titus Lewis (1773–1811)
***Odynfab** Edward Edwards (c.1833–1900)
***Offeiriad Cymreig** Evan Lewis 
***Offeiriad Methodistaidd, yr **John Williams
***Olwern** Y Parch. Evan (Olwern) Evans (1873–1910) 
***Omicron** John Newton 
***Onomato** John Morgan Edwards (1868–1924)
***Orinda** Katherine Philips 
***Ossian Gwent** John Davies (1839-1892)
***Owain Alaw** John Owen (1821-1883)
***Owain Aran** Owen Roberts (1836–1863), Dolgellau
***Owain Glyndwr** Owen G. Williams 
***Owain Gwyrfai** Owen Williams 
***Owain Lleyn** Owen Owen
***Owain Myfyr** Owen Jones (1741-1814)
***Owen Dinorwig** Owen Morris
***Owen Gospiol** Owen Griffith (1803-1868)
***Owen Gwyrfai** Owen Williams (1790-1874)
***Owen of Wales** Owen Morgan (hefyd **Morien**)
***Owen Rhoscomyl** Arthur Owen Vaughan (1858?-1919)

## P 
***P A Môn** Ben Jones (1788-1841) (hefyd **Prif Arwyddfardd Môn**)
***Pab, y** William Owen (1785-1864)
***Pabellwyson** Daniel Thomas 
***Parry Ddall** John Parry (1710?–82)
***Patrobas** Robert Gruffydd (1832-1863)
***Pedr Alaw** Peter Edwards (1854-1934)
***Pedr Fardd** Peter Jones (1775-1845)
***Pedr Hir** Peter Williams (1847-1922)
***Pedr Mostyn** Peter Williams 
***Pedr o Gaerwys** Parch. Peter Jones (1838-1914)
***Pedrog** John Owen Williams (1853-1932 (hefyd **Pedrogwyson**)
***Pedrogwyson** John Owen Williams (1853-1932 (hefyd **Pedrog**)
***Peirianydd Gwynedd** John Davies (1783-1855)
***Penar** Griffith Griffiths 
***Penardd** John Humphreys Davies
***Pencerdd America** Joseph Parry (1841–1903)
***Pencerdd Cernyw** John Sarah (g 1878)
***Pencerdd Ceredigion** Edward Edwards (1816-1897)
***Pencerdd Eifion** W. Jarret Roberts
***Pencerdd Gwalia** John Thomas (1826-1913)
***Pencerdd Gwynedd** John Henry Roberts (1848-1924)
***Pencerdd Llyfnwy** Richard Griffith Owen (1869-1930)
***Pencerdd Maelor** Hugh Davies (1844-1907)
***Pencerdd Moelwyn** Cadwaladr Roberts (1854-1915)
***Pencerdd Mynwy** Morgan William Griffith (1855-1925)
***Pencerdd y De** Llewellyn Williams (1822–1872) (hefyd **Alawydd y De**) 
***Pencerddes Morgannwg** Clara Novello Davies (1861-1943)
***Penfro** William Morgan (1846-1918)
***Pengarn** John Duncan (1846–1914)
* **Penllyn** William Evans Jones (1854-1938), brawd **Llew Tegid**
***Penrhyn Fardd** Richard Jones y Wern
***Pentrefwr** John Griffith (1860–)
***Pêr Ganiedydd, y** William Williams, Pantycelyn (1717–1791)
***Percival** Ernest Rhys (1859-1946)
***Pererin Arfon** William Barrow
***Pererin Môn** Hugh Roberts
***Perorfryn** R. P. Jones 
***Plenydd** Henry Jones Williams (Comin:Henry Jones Williams (Plenydd, 1844-1926) (1883) NLW3364265.jpg**)**
***Powyson** Thomas Jones
***Prif Arwyddfardd Môn** Ben Jones (1788-1841) (hefyd **P A Môn**)
***Prydydd Coch, y** H. L. Davies 
***Prydydd y Coed** Reuben Davies (1808-1833)
***Prydydd y Moch** Llywarch ap Llywelyn (fl. 1173-1220)
***Prysgol** William Owen (1813–1893)
***Prysor** Robert John Williams (1891-1967)
***Pwyntil Meirion** John Kelt Edwards (1875–1934)
***Pyll / Pyll Glan Conwy** John Jones

## Ph
***Philologos** John Williams 
***Philomath** Evan Davies (fl. 1720-1750)
***Philomath** John Prys (1739?-1786??
***Philo-Nauticus** Thomas Powell 
***Philos** Phillip Charles Davies 
***Philos o'r Cwm** Philip David Philips, Nant y glo
***Philotheoros** William Owen (1789-1841)
***Phylip Rhyd-y-Groes** Philip Davies (1822–1869)

## R 
***Risiart ap Robert** Richard Roberts
***R. O. Machno** Robert Owen (hefyd **Machno**)
***Robert ap Gwilym Ddu o Eifion** Robert Williams (1766-1850)
***Robert Rees** Alfred Neobard Palmer 
***Roberts Bach** W. Lloyd Roberts
***Robertus** Parch. Robert Roberts (1843-1906)
***Robin Awst** (c.1824–1860)
***Robin Bwrgwyn** John Tudor Jones (1904-1985) (hefyd **John Eilian**)
***Robin Ddu Eifionydd** Robert Maris (fl. 1767-1816)
***Robin Ddu Eryri** Robert Parry (1804-1892)
***Robin Ddu o Feirion** Robert Edwards (1775-1805)
***Robyn Ddu o'r Glyn** Robert Davies 
***Robin Ddu yr Ail o Fon** Robert Hughes (1744-1785)
***Robin Goch o'r Gest** Robert Roberts (1824-1892)
***Robyn Hydref** Robert Herbert Williams 
***Robyn Llŷn** Robyn Léwis (1929-2019)
***Robin Meirion** Robert Roberts (1807-1832)
***Robin Telynor** Robert Griffith (1847-1909) 
***Robyn Wyn o Eifion** Robert Hughes (1824-1885)
***Rolant ap Gwilym** Robert Rowlands 
***Rolant o Fôn** Rowland Jones (1909-1962)
***Rosseronian** D. Lewis Davie, Bow Street (bu f 1961)
***Rufus** John (Rufus) Williams (1833-1877)

## Rh
***Rhabanian** John Daniel 
***'Rhen Graswr Eleth** Thomas Pritchard 
***Rhisiart Ddu o Fôn** Richard Pritchard (c.1846-1919)
***Rhisiart Ddu o Wynedd** Richard Foulkes Edwards (1836-1870)
***Rhisiart o Fadog** Richard Griffith Humphreys (1848-1924)
***Rhosynnog** William Morris (1843-1922)
***Rhosyr** Robert Silyn Roberts (1871-1930) (hefyd **Silyn**)
***Rhuddenfab** Lewis Jones (1835-1915)
***Rhuddwawr** John Evan Davies (1850-1929)
***Rhufoniawc** Robert Lloyd Morris
***Rhydwilym** T. Jones
***Rhydderch ap Morgan** R. Morgan,
***Rhydderch Farfgoch** Job Davies (1821-1887)
***Rhydderch Gwynedd** Richard Jones
***Rhydderch Hael** Richard Mills (1809-1844)
***Rhydderch o Fon** John Prydderch Williams (1830-1868)
***Rhys Dyfed** Rees Arthur Rees (1837-1866)
***Rhys Goch Dyfed** Ernest Rhys (1859–1946)
***Rhysiart Gwilym** Richard William
***Rhywun** Richard Davies (1833-1877)

## Q
***Quellyn** Robert Harris Jones, Rheithor Llanidloes

## S 
***Sadie** Sarah Williams (1837-1868)
***Salmon Llwyd** Owen Wynne Jones (1828-1870) (hefyd **Caersallawg**, **Glasynys** a **Gwyndaf Hen**)
***Salopiensis** Job Orton 
***Samlet** W. Williams 
***Sarnicol** Thomas Jacob Thomas (1873-1945)
***Scorpion** Thomas Roberts (1816-1887)
***Selwyn Iolen** Selwyn Griffith (1928 -2011)
***Senex** John Evans
***Sgolor Mawr, y** Robert Roberts (1834-1885)
***Shoni Sguborfawr** John Jones (fl. 1811-1858)
***Siamas Gwynedd** Edward Charles (1757-1828)
***Sian Fwyn** Jane Roberts
***Siarl Wyn o Benllyn** Charles Saunderson
***Siencyn Pen-hydd** Jenkin Thomas (1746-1807)
***Siencyn y gof** Jenkin Hughes (Tad James Hughes (Iago Trichrug))
***Silfan Silan** Morgan Harris (1888-?)
***Silurist** Henry Vaughan (1621-1695)
***Silyn** Robert Silyn Roberts (1871-1930) (hefyd **Rhosyr**)
***Silyn** David Silyn Evans 
***Siôn Caeronwy** John Jones 
***Siôn Ceiriog** John Cain Jones (-1826?)
***Siôn Ceiriog** John Edwards (1747-1792)
***Siôn Collen** Jonathan Parry (fl. 1779)
***Siôn Dafydd Berson** John Davies (1675-1769)
***Siôn Dafydd Las** John Davies (–1694)
***Siôn Dafydd Rhys** John David Rhys (1534-1609?)
***Siôn Ebrill** Sion Rhisiart neu John Richards, Pen y Garth, Llanbedr, Meirionnydd
***Siôn Fryn'rodyn** John Jones (1814-1900) 
***Siôn Grythor** John Vaughan (–1824)
***Siôn Gymro** John Davies (1804-1884)
***Siôn Lleyn** John Roberts (1749-1817)
***Siôn Robert Lewis** John Roberts (1731-1806)
***Siôn Rhydderch** John Roderick (1673-1735)
***Siôn Siencyn Morgan** John Jenkyn
***Siôn Singer** John Williams (-1807)
***Siôn Treredyn** John Edwards (1606?-1660?)
***Siôn Tre-Redyn** John Edwards
***Siôn Wyn o Eifion** John Thomas (1786-1859)
***Siôn y Potiau** John Edwards (c.1700-1776)
***Sioronwy** Evan George Jones (1892-1953)
***Spinther** James (Spinther) James (1837-1914)
***SR** Samuel Roberts (1800-1885) (hefyd **Llanbrynmair Farmer**)
***Stephan** Stephen Davies (1790-1858)
***Syntax Mon** Richard Davies (1811-1898)

## T 
***T ab/ap Ieuan** Thomas Evans, Trawsfynydd (–1893/4)
***Tafalaw Bencerdd** Thomas Gruffydd Jones (1832-1898)
***Tafolog** Richard Davies (1830-1904)
***Taldir** Frañsez Jaffrennou (1879–1956))
***Talfardd** Ellis Pugh 
***Talfryn** Iorwerth Hefin Lloyd (1920–1986)
***Talhaiarn** John Jones (1810-1869)
***Taliesin ab Iolo** Taliesin Williams (1787–1847)
***Taliesin Craig-y-felin** Thomas Emlyn Thomas (1822-1846)
***Taliesin Fychan** John Hugh Roberts, Y Bala (–1897)
***Taliesin Hiraethog** John Davies (1841-1894)
***Taliesin o Eifion** Thomas Jones (1820-1876)
***Talybolion** Richard Jones (1926–2003) (hefyd **Dic Tŷ Capel**) 
***Tanymarian** Edward (Jones) Stephen (1822-1885)
***Tarianydd** John Mills, Aberdâr (Sefydlydd Tarian y Gweithwyr)
***Tau Gimel** Thomas (Jeremy) Griffiths (1797?-1871)
***Tecwyn** G. Parry 
***Tecwyn** David Tecwyn Evans (1876-1957)
***Tegai** Hugh Hughes (1805-1864)
***Teganwy** Thomas Powell 
***Tegfelyn** Parch Edward Lloyd (1846-1922)
***Tegid** John Jones (1792-1852) (hefyd **Ioan Tegid**)
***Tegidon** John Phillips (1810-1877)
***Tegla** Edward (Tegla) Davies (1880–1967)
***Tegwyn** Thomas Davies (1851-1924)
***Teifi** Rees Rees (1870–1948)
***Teiliwr Llawen** Jeremy (neu Ieuan) Gruffydd (tua chanol yr 17g)
***Telynfab** Benjamin Evans (1844-1900)
***Telynog** Thomas Evans (1840-1865) (hefyd **Coch y Berllan**)
***Telynor Cybi** Owen Jones
***Telynor Cymru**  John Roberts (1816-1894) (hefyd **Alaw Elwy**)
***Telynor Cymreig** Robert Jones (Bob Britannia) (1816-1894)
***Telynor Dall, y** John Parry (1710?-1782)
***Telynor Dall, y** Richard Roberts (1769-1856)
***Telynor Gwalia** William Jones
***Telynor Mawddwy** David Roberts (1875-1956)
***Telynor Môn** John Jones
***Telynor Seiriol** Owen Jones
***Telynor y Gogledd** John Elias Davies (1847-1883)
***Telynor y Waun Oer** Evan Jones
***Telynores Cybi** Ellen Jane Jones
***Telynores Dwyryd** Eleanor Jones
***Telynores Maldwyn** Nansi Richards (1888–1979))
***Telynores Mawddwy** Catrin Jones [Llanrwst] cyfneither i Nansi Richards - llun ohoni ar dudalen Nansi.
***Tiberog** Jacob Treharne 
***Thomas Palestina** Thomas Lewis (AS Môn) 
***Tilsley** Gwilym Richard Tilsley (1911–1997)
***Tom Nefyn** Thomas Williams (1895-1958)
***Tomas ap Gwilym** Thomas Williams 
***Tomos ap Titus** John Thomas Evans (1869-1940) 
***Tomos Glyn Cothi** Thomas Evans (1764-1833)
***Trahaiarn o'r Hen Blwyf** Dr John Llewellyn Treharne (1851–1906)
***Treaserth** Dr John David Williams (1864–1901)
***Trebor /Trebor Aran / Trebor Arran ** Robert James, Mill Street, Dolgellau
***Trebor Aled** Robert Jones (1866-1917)
***Trebor Eifion** Robert Williams, Penygroes
***Trebor Mai** Robert Williams (1830-1877)
***Trebor Mechain** Robert Jones (1828-83)
***Trebor Mon'* Robert Thomas Williams *(Delwedd ar Gomin-Robert Thomas Williams (Trebor Môn).jpg)*
***Trefîn** Edgar Phillips (1889-1962)
***Treflyn** Evan Treflyn Jones (1852/3–1916)
***Tremrudd** Richard Hughes
***Trithyd** Thomas Davies (1810?-1873?)
***Trogwy** Robert Evans 
***Trumor** David Thomas
***Trwyn Pres, y** William Llewelyn Williams A.S. (1867-1922)
***Trydanydd o Fôn** Morris Griffith 
***Tryfan** Thomas Owen Jones 
***Tryfanwy / J.R. Tryfanwy** John Richard Williams (1860-1924)
***Tubal Lleifiad** Edward Samuelson 
***Tudno** Thomas Jones (1849-1895)
***Tudur Arfon** Thomas Williams (c.1832–1906)
***Tudur Clwyd** Thomas Frimston (1854-1930)
***Tudwal** Hugh Tudwal Davies
***Twm Capelilo** Thomas Williams 
***Twm Carnabwth** Thomas Rees (1806?-1876)
**'Twm o'r Nant** Thomas Edwards (1739-1810)
***Twm Pedrog** Thomas Williams (1774-1814)
***Twm Shon Cati** Thomas Jones (c.1530-1609)
***Twrch Cynon** Isaac Thomas 
***Twrfab** Robert Ellis Williams 
***Twrog** Owen Wynne Thomas (c.1804–1855); John Thorman (1852–1909), cyfansoddwr o Faentwrog (hefyd **Alaw Twrog**)
***Twynog** Twynog Jeffreys
***Tydain** William Griffith (c.1829–1901)
***Tydfylyn** Daniel Thomas Williams (1820-1876)
***Tydy** John Jones (1883-1968)
***Tysilio** Llewelyn Jones

## Th
***Thalamus** Joshuah Thomas Morgan
***Thesbiad, y** John Roose Elias (1819-1881)
***Thomas ab Ieuan** Thomas Evan James (1829-1870)

## V 
* **V. D. M.** William Edward Winks
* **Vinsent** Evan Vincent Evans (1851-1934)
***Vulcan** John Jones (1825-1889)

## W 
***Walter Glynne** Thomas Glyn Walters (1890-1970)
***Watcyn Fardd** John Watkin Jones
***Watcyn o Feirion** Watkin Jones (1882-1967)
***Watcyn Wyn** Watkin Hezekiah Williams (1844-1905)
***Waunfawr** Owen Williams (1774-1827?)
***Wedros** Thomas Evans 
***Welsh Freeholder** David Jones (1765-1816)
***Wern Ddu** Thomas William Proger (1860–1947)
***Wil Awst** William Augustus (yn fyw tua diwedd y 18g)
***Wil Bach Printar** W. Roberts
***Wil Boots** William Williams
***Wil Brych** William Roberts (fl. c.1825)
***Wil Cwch Angau** Glyn Mills Ashton (1910-1991)
***Wil Ifan** William Evans (1882-1968)
***Wil Sam** William Samuel Jones (1920-2007)
***Wil Ysgeifiog** William Edwards (1790-1855) (hefyd **Gwilym Callestr**)
***Will Penmorfa** William Williams (1759-1828)
***Williams o'r Wern** William Williams (1781-1840)
***Wmffra** Edward Richard Davies (1833-1877)
***Wmffra Cyfeiliog** John Humphreys (1861-1944)
***Wmffre Dafydd ab Ifan** Humffrey Davies (1600?-1664?)

## Y 
***Ylltyr** E. Williams
***Ynyr Gwent** Thomas Evan Watkins (1801-1889) (hefyd **Eiddil Ifor** ac **Emyr Llydaw**)
***Ysbryd Llywelyn** Delta Evans (hefyd **Dewi Hiraddug**)
***Ysgafell** Jane Williams (1806-1885)
***Ysolyr o’r Fferyllfa** Thomas Manuel
***Ywain Meirion** Owen Griffith (1803-1868)

## Z
***Zachary Mather'* Zechariah Mathers (1843-1934)

## Ffynonellau 
Crewyd y casgliad hwn trwy gyfuno ac ychwanegu at gasgliadau o ffugenwau:
 
*Atodiad i Gatalog Llenyddiaeth Argraffedig Adran y Gymraeg Llyfrgelloedd Rhydd Caerdydd James Ifano Jones
*Casgliad Fflemeg 
*Rhestr *Y Casglwr
**Yr Eugrawn*, Mynegai i Ysgrifau am Weinidogion tud 41-45

Mae nifer o'r ychwanegiadau wedi dod o wefan Casglu'r Cadeiriau ac o erthyglau Wicipedia, llyfrau Wicidestun ac eitemau Wicidata.

## Cyfeiriadau
Categori:Beirdd o Gymru
Categori:Ffugenwau
Categori:Llenorion o Gymru
Categori:Rhestrau Cymru