[S217] 1901 census of Wales, Caernarvonshire Waenfawr, Mary J Roberts; digital image, Ancestry(http://www.ancestry.co.uk : accessed 21 December 2017); citing Class: RG13; Piece: 5274; Folio: 26; Page: 2
[S216] Bettws Garmon (Caernarfonshire, Wales) Mary Jane Roberts grave marker; taken by Brian Roberts.
[S218] 1939 National Register of Wales, Gwyrfai R.D., Caernarvonshire, Bryn Awelon, Mary J Roberts; digital image, Findmypast (http://www.findmypast.co.uk: accessed 21 December 2017); Ref: RG101/7542J/003/8 Letter Code: ZEDC.
[S219] 1911 census of Wales, Caernarfonshire, Waenfawr, Mary Jane Roberts; digital image, Ancestry (ancestry.co.uk : accessed 21 December 2017); citing Class: RG14; Piece: 34456 Schedule Number: 9.