R. D. Evans Papers 1780-1957 - details of extant records on Archives Network Wales
"Robert David Evans lived at Bryn Mair, Tre Gof, Bethel, Llanddeiniolen. He accumulated papers of David Williams (fl. 1885-1893) of Tanrallt, Llanfair-is-gaer,
accountant and ship broker; William Williams (fl. 1884-1907) of Greuor Farm, Llanfair-is-gaer
, farmer and rate collector; Hugh W. Hughes (fl. 1882-1957), son of William Williams' wife, who also farmed at Greuor; and Robert Ephraim Jones ('Twrog Wyn')."