On 1 October 1859, Crossland married Lavinia Cardwell Pigot (who died in Boulogne, France on 17 January 1876).Binns, p. 159.</ref> They had one child – a daughter, Maud, who was born on 10 July 1860 and died on 8 March 1900. Crossland also had an illegitimate son, Cecil Henry Crossland Hatt (born 1877), with his second (common law) wife, (Eliza) Ruth Hatt (née Tilley; 1853–1892). She became a well-known actress, using the stage name Ruth Rutland, and they lived together in a bungalow on the Royal Holloway site, designed by Crossland and built in 1878 as a home for himself and his family while he oversaw Holloway College's construction.