 By his second wife, he had a son Eric (1879–1951), and a daughter Theodora "Dora" Maclagan (1881–1976).His eldest son Cyril died childless.His second son, Walter Dalrymple Maclagan (1862–1929), had a son William Dalrymple Maclagan, schoolmaster, and a daughter, Evelyn Maclagan, physician, both of whom apparently died unmarried.