morant married, in 1866, sophia georgina eyres, younger daughter of colonel george william eyres, of the grenadier guards. lady morant died in 1911, and he died ten years later, on 13 february 1921. morant was survived by three sons and four daughters. one of morant's sons, edgar robert morant, d.s.o. (1874-1931) also served as a captain of the royal navy. one daughter, sybil mary morant, married the publisher james blackwood (1878-1951), while another, aileen morant (d 1969), married another royal navy officer, captain llewellyn evan hugh llewellyn (1879-1970)