David son of Joseph Ephraim of Rhiw, labourer, and Lowry Richards (baptismal record)
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In 1851 David Ephraim (25) of Trawsfynydd, sheep dealer, was with his parents in Tynewydd Rhiw, Trawsfynydd.
In 1871 David Ephraim (45) of Trawsfynydd, unmarried, cowman, was with his brother Robert and his family in Bryn Cyfergid, Festiniog.
In 1881 David Ephraim (55) of Trawsfynydd, widower*, indoor farm servant, was in Bodyfuddai, Trawsfynydd.
* This would appear to be an error on the part of the Census taker.
In 1891 David Ephraim (61) [sic] of Trawsfynydd, single, farm servant, was living in Pentre, Llanelltyd.
In 1901 David Ephraim (74) of Trawsfynydd, single, farm labourer, was on Bryncyfergyd Farm in Festiniog.