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Dyddiad

TermDefinition
mil saith chwech un 1761
mil saith chwech tri 1763
mil saith chwech pump 1765
mil saith chwech wyth 1768
mil saith chwech naw 1769
mil wyth pedwar dau 1842
mil wyth pedwar pedwar 1844
mil wyth pedwar chwech 1846
mil naw saith un 1971
mil naw saith dau 1972
mil naw naw chwech 1996
dwy fil a deg 2010
dwy fil ac ugain 2020
dwy fil a saith 2017
dwy fil a naw 2009