Hi Dave,
I can find the 1851 census for Garreglwyd, Rhoscolyn - I expect you have it too - it shows:
William Jones, Head, 30, Farmer of 30 acres employing 1 lad, b. Rhoscolyn
Elizabeth Jones, Wife, 25, b. Cerrigceinwen
Margaret Jones, Daur., 1 month, b. Rhoscolyn
Anne Jones, Mother (Widow), 68, b. Llanfairpwll
Owen Williams, Serv, 16, farm lab, b. Llanddyfnan
Cathrine Williams, Lodger, 77, Pauper, b. Newborough
It seems that both William Jones and his mother Anne died at Garreglwyd before the 1861 census, the two deaths were registered as follows:
William Jones, 6 Nov 1859 at Garreglwyd, Rhoscolyn, age 40, agricultural labourer. Informant Owen Owens Cerrig moelion, Rhoscolyn.
Anne Jones, 15 Apr 1860 at Garreglwyd, Rhoscolyn, age 78, widow of Tailor William Jones. Informant Robert Owen, Cefn y Borth, Rhoscolyn.
Unfortunately a section of the 1861 census for Rhoscolyn is missing and I suspect Garreglwyd is in this missing section. (see
http://discovery.nationalarchives.gov.uk/SearchUI/Details?uri=C3102405)
By 1871 there is a different family at Garreglwyd - Thomas Jones, Oyster dredger, 37, b. Bodedern; wife Elizabeth, 46, b. Heneglwys and 8 children ranging from 2 to 18.
Do you have names and approx. years of birth of any of the other children of William and Elizabeth Jones?
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