Rachel Gilmour, daughter of William Gilmour of Ballyvelton near Coleraine, County Londonderry, Ireland, born 6 July 1819 (according to an online tree) married first (1841) at Terrace Row Presbyterian Church, Coleraine to Robert Sawyers & had family.
Gilmours of Ballyvelton said to be connected to Gilmours the jewellers in Coleraine (according to Dr. Mullin in his book The Families of Ballyrashane). There also seems to be a connection to Castleroe also outside Coleraine but in the opposite direction from the Ballyrashane district, which includes Ballyvelton.