1841 Census shows William age 30, farmer, and Elizabeth his wife age 35
living "towards Penylasgarn" in the parish of Trevethin.
1851 Census shows family living at Penlasgarn in Trevethin: Martha is
missing, and she may have died. William is noted as being a farmer of 59
acres.
Llandaff Probate records [NLW] 13 April 1855 - Bond by Elizabeth Jeremiah
of Panlasgan farm, Trevethin in sum of �900 to render accounts etc of the
estate of William Jeremiah, late of the parish of Trevethin (estate under
�450). Intestate died in September 1853.