 Sir Adolphus married, on 21 September 1875 in Kingston upon Hull, Sophia Jane Holden (2 April 1857 – 3 February 1920), the daughter of Mr. Thomas Holden, of Winstead Hall, Hull, by whom he had one daughter, Olga FitzGeorge.Following the death of the first Lady FitzGeorge, the Admiral married, on 28 October 1920 in London, Marguerite Beatrice Daisy Watson (14 April 1863 – 26 February 1934), daughter of John Watson, of Waresley Court, Hartlebury, Worcestershire.Sir Adolphus died 17 December 1922 at his residence, 20 Eccleston Square, London.