Guy Louis Busson du Maurier, D.S.O. (18 May 1865 – 9 Mar 1915) was an English army officer and playwright. He was the son of the writer George du Maurier and brother of Sylvia Llewelyn Davies and the actor Gerald du Maurier. He was educated at Marlborough and Sandhurst, and became an officer in the Royal Fusiliers in 1885.[1][2][3] He served in the Second Boer War, where he commanded a mounted infantry regiment,[4] earning the Distinguished Service Order in 1902.[5] He achieved notoriety in 1909 as the author of the play An Englishman's Home.[6] At the death of his sister Sylvia, and as requested in her will, he became co-guardian to the Llewelyn Davies boys who inspired Peter Pan.[7] He served for the last time in World War I, being killed in action in Flanders in 1915.[8] J. M. Barrie wrote to Guy's nephew George Llewelyn Davies to inform him of the death; by the time Barrie received his response, George himself had been killed.[9]