David Davies (Llansilin(sp)) married Elizabeth Davies (Llanrhaeadr-ym-Mochnant)married Llangadwaladr about 1836. I have found a record of their marriage but can not find anything else.
14 Oct 1836 at Llanrhaeadr ym Mochnant, by bannsDavid Davies of Llangadwaladr and Elizabeth Davies of Llanrhaeadr YM.Witnesses - John Davies and Thomas HughesNo other info on the record.
PS - there is a John b. 1852, Llangadwaladr with the same parents' names but not at all sure as the names are pretty common.