Bryce Gilmour was a son of Bryce and Ida Gilmour. Brice Matthew Gilmour was born in Roscommon about 1894. He was one of ten children, seven surviving. His father was in the Royal Irish Constabulary. The family moved around a lot. They lived in Ballymoney. Young Bryce Gilmour also joined the Royal Irish Constabulary in Cookstown. Lance Corporal Bryce Gilmour was serving with the 2nd Battalion of the Irish Guards when he was killed in action on 30th September 1915 at Loos.