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)Hysbysebion Teuluol Daily Post 5 Hyd 1972 ". . . Gynt o View Terrace Bangor ELIZABETH DAVIES-REES (Awen Mona) priod y ddiweddar Dr Edward Davies-Rees Gwasanaeth . . . Ainon Bangor . . . yna ym Mynwent y Dref Machynlleth (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 EfansBywyd a Chan Tomos Efans (Cyndelyn) 
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 s:Glan Cledwen (Cymru 15 Rhagfyr 1897)
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 MawrWilliam John Walford (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 JonesTraethawd ar Enwogion Swydd Feirion; Jones, Rowland, (Gwybedyn) (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 JonesCof y Cwmwd H.E. Jones (Hywel Cefni) (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 JonesIeuan Nebo-Cof y Cwmwd (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 JonesDaily Post 5 Ionawr 1942 "Joseph Jones, of Newtown, who died last week,-was well known, under the pen-name of J. J. Drefnewydd, as a writer of verse" (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, Dolgellaus:Lewys Aran (Cymru Tachwedd 1918) (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[https://cof.canolfanuwchgwyrfai.cymru/wici/John_Sarah_(Pencerdd_Cernyw) Cof y Cwmwd John Sarah (Pencerdd Cernyw) (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 RobertsHynafiaethau Nant Nantlle; Cofiannau Pen. 2
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 JonesHynafiaethau Nant Nantlle; Cofiannau Pen. 2 
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 HughesTrithyd Thomas Davies (1810?-1873?)Trogwy Robert Evans Trumor David ThomasTrwyn 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 DaviesTwm 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 JeffreysTydain William Griffith (c.1829–1901)Tydfylyn Daniel Thomas Williams (1820-1876)Tydy John Jones (1883-1968)Tysilio Llewelyn Jones

ThThalamus Joshuah Thomas MorganThesbiad, 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 JonesWatcyn 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. RobertsWil Boots William WilliamsWil 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)Wmffre Dafydd ab Ifan Humffrey Davies (1600?-1664?)

 Y Ylltyr E. WilliamsYnyr 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 ManuelYwain Meirion Owen Griffith (1803-1868)

ZZachary 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'', [https://www.capeli.org.uk/uploads/gweinidogion_rhestr.pdf 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.

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