Geoffrey was educated at Brighton College and Worcester King’s School; at St John’s College, Cambridge - where he took an honours in the Science Tripos; and at St Thomas’s Hospital, London for his clinical work. Whilst at St Thomas’s he edited the hospital gazette. After obtaining the diplomas of the Conjoint Board, he went into practice at Sutton-in-Ashfield, Notts. He also joined the Territorial Force in 1915, and was attached to the Eastern General Hospital, assisting the staff at Addenbrooke’s Hospital until he sailed to Egypt on Easter day, 1916. He served there on both fronts - Palestine and spending Christmas in Jerusalem. In May 1918 he was transferred to France, and going home on leave for the first time in July he got married. Two months after his return to France he was killed instantaneously by a shell whilst attending wounded. Geoffrey was the only son of George Gershom Bonser J.P. and Dorothy A Mary Bonser of "Kirkstede" Church Street, Sutton-in-Ashfield, Nottingham; and the husband of Lilian Bonser (nee Prime)