Photograph of the headstone of Thomas Williams and Mary Williams Llangwm Pembrokeshire 1932 Math Eitemau Uwchlwytho gan Llangwm Local History Society
Mary Williams (1883-1977) Math Eitemau Uwchlwytho gan Y Bywgraffiadur Cymreig / Dictionary of Welsh Biography
'Mary Williams and daughter Sarah' gan David Patrick, 1850 (olew) Math Eitemau Uwchlwytho gan Casglu'r Tlysau
