Siryfion Sir Drefaldwyn yn y 19eg ganrif

Mae hon yn rhestr o ddeiliaid swydd Siryf Sir Drefaldwyn rhwng 1800 a 1899.

Siryf yw cynrychiolydd cyfreithiol y Brenin a benodir yn flynyddol ar gyfer pob sir yng Nghymru a Lloegr, ei ddyletswydd yw cadw'r heddwch yn ei sir a sicrhau ufudd-dod i gyfraith y brenin. Yn wreiddiol roedd yn swydd o statws a grym ond bellach mae'n swydd seremonïol yn bennaf.
1800au
bawd|Charles Hanbury-Tracy
 1800: Henry Procter, Aberhafesb
1801: Joseph Lyon, Parc Faenor, Aberriw
1802: David Edward Lewis Lloyd, Fferm
1802: Pryce Jones, Cyfronnydd
1802: Thomas Jones, Llanlothian
1803: Robert Knight, Gwernygoe
1803: John Winder, Faenor
1804: Charles Hanbury Tracy, Gregynog
1805: William Owen, Bryngwyn
1805: Bagot Read, Penyrhillan
1806: William Owen, Bryngwyn
1807: David Edward Lewis Lloyd, Moydog
1808: Francis Lloyd, Domgay
1809: Robert Knight, Gwernygoe
1810au
bawd|Glan Severn
1810: John Owen Herbert, Dolforgan
1811: Edward Heyward, Crosswood
1812: George Meares, Fynnant
1813: Edward Corbett, Plas Gwyn
1813: William Pugh, Caer Howell
1814: Arthur Davis Owen, Glansevern
1815: Pryce Jones, Cyfronnydd
1816: Thomas Watkin Youde, Cloghfan disodli gan John Arthur Lloyd, Domgay
1817: Richard Pryce Gunley
1818: John Edwards, Y Plas, Machynlleth
1819: John Davies, Machynlleth

1820au
1820: John Buckely Williames Glanhafran, Betws
1821: Valentine Vickers, Criggion
1822: Joseph Hayes Lyon Cefnblwarch, Aberriw
1823: David Pugh,Llanerchyddol, Y Trallwng
1824: Samuel-Amy Severne Rhosrgoch, Treberfedd
1825: Phillip Morris Trehelig, Y Trallwng
1826: John Hunter Glynhafren, Llanidloes
1827: John Jones Maesmawr, Cegidfa
1828: John James Turner Pentreheilin, Llandysilio
1829: Wythen Jones Porth y Rhiw

1830au
1830: Henry Adolphus Proctor, Neuadd Aberhafesp
1831: Robert Maurice Bonnor Maurice, Neuadd Bodynfoel
1832: Ôl-lyngesydd Syr Charles Thomas Jones, Broadway 
1833: John Jones, Deythur
1834: William Morris, Pentre Nant
1835: Hugh Davies Griffiths, Llechweddgarth
1836: James Johnson Proud, Monksfields
1837: Robert Phillips, Hiros
1838: Martin Williams, Brongwyn
1839: David Hamer, Glanrafor
1840au
bawd|Syr John Conroy1840: Thomas Evans, Maenol
1841: John Vaughan, Rhôs Brynbwa
1842: Syr John Roger Kynaston, 3ydd Barwnig, Neuadd Hardwick, sir Amwythig
1843: Syr John Conroy, 1af Barwnig Plasypennant
1844: John Dorset Owen Broadway, Yr Ystog
1845: John Winder Lyon Winder, Faenor-Parc
1846: John Foulkes, Carno
1847: Capten Offley Malcolm Crewe Read, RN, Neuadd Llandinam.
1848: William Lutener, Dolerw
1849: Robert Gardner, Plas y Llys
1850au
bawd|Garthmill
1850: John Davies Corrie, Dyserth
1851: Charles Jones, Garthmill
1852: Edward Salisbury Rose Trevor, Trawscoed
1853: John Naylor, Leighton-Hall
1854: John Edmund Severne, Wallop
1855: Edmund Ethelstone Peel, Llandrinio
1856: Richard Herbert Mytton, Garth
1857: Maurice Jones, Fronfraith
1858: Richard Penruddocke Long, Dolforgan
1859: Edward Morris, Berth Llwyd

1860au
1860: William Cyrlio, Maesmawr
1861: John Heyward Heyward, Crosswood
1862: John Lomax, Bodfach
1863: John Dugdale, Llwyn
1864: Major-General William George Gold, Neuadd Garthmyl
1865: Robert Simcocks Perrott, Bronhyddon
1866: Edwin Hilton, Rhiewhiriarth
1867: Major Joseph Davies, Brynglas
1868: William Fisher, Maesfron
1869: John Pryce Davies, Fronfeleu,
1870au
1870: Capten Offley Malcolm Crewe Read, RN, Neuadd Llandinam.
1871: John Robinson Jones, Neuadd Brithdir
1872: Henry Bertie Watkin Williams Wynn, Plas-nant-y-Meichiad
1873: Devereux Herbert Mytton, Garth
1874: Thomas Openshaw Lomax, Bodfach
1875: Richard Edward Jones, Cefn Bryntalch
1876: Richard John Edmunds, Edderton
1877: James Walton, Dolforgan
1878: Richard Woosnam, Glandwr, Llanidloes
1879: Cyrnol George Edward Herbert, Glanhafren
1880au
1880: Robert John Harrison, Caerhowel
1881: Syr Thomas Gibbons Frost, Dolcorsllwyn
1882: Nicholas Watson Fairies-Humphreys, Trefaldwyn
1883: Henry Lloyd, Dolobran
1884: Philip Wright, Mellington
1885: Valentine Whitby Vickers, Crigion
1886: Peter Arthur Beck, Nhrelydan, Cegidfa
1887: Charles Whitley Owen, Fronfraith, Llanysil
1888: Major William Corbett Winder, Parc Faenor
1889: Henry Leslie, Bryntanat
1890au
bawd|Pryce Pryce-Jones1890: Qeorge Henry Hayhurst Hayhurst-France, Ystymcolwyn
1891: Syr Pryce Pryce-Jones, Dolerw
1892: Edward Davies, Plas Dinam
1893: John Cooke Hilton, Glynhiriaeth, Llanfair
1894: Edward Arthur Bonnor Maurice, Bodynfoel
1895: Athelstane Robert Pryce, Cyfronydd
1896: John Marshall Dugdale, Llwyn
1897: John Lomax, Bodfach
1898: Strafford Davies Price-Davies, Marrington, Chirbury
1899: Oliver Ormrod Openshaw, Brongain, Llanfechain, Croesoswallt

Categori:19eg ganrif yng Nghymru
* 1800