Edwin Osler was born at Abbots Langley in the winter of 1879. He was one of six sons born to Daniel and Ann Osler. At the time of the 1881 Census the family was listed living at Breakspeare Road, Abbots Langley but by 1891 they had moved to Adrian Road. Daniel worked as a General Labourer, and in 1891 Edwin worked as a Butcher.
Edwin married in 1904 and by the time of the 1911 Census he and his wife Clara had had three children, two daughters and a son. In 1911 the family lived at 18 Asylum Cottages (Tanners Hill) in Abbots Langley, and Edwin was employed as an Asylum Attendant at the Leavesden Asylum.
He was first recorded in the Abbots Langley Parish Magazine Roll of Honour in May 1917, serving with the Royal Army Medical Corps (RAMC). He was recorded serving with the same unit through to the end of the War. Edwin was listed in the Absent Voter Records in Autumn 1918 and Spring 1919, serving with the 13th Company of the RAMC, and his address was given at 129 Breakspeare Road, Abbots Langley.
Edwin Osler survived the War.