His younger brother, Geoffrey, first of the Congreve baronets of Congreve, Staffordshire, was a distinguished sailor, awarded the DSO for a raid on Norway and killed in 1941 during a raid on the French coast.
Sir Geoffrey Congreve Bt DSO died of his wounds received during the raid.
His younger son Geoffrey Cecil Congreve was created a baronet, of Congreve in the County of Stafford, in July 1927 (see Congreve baronets).
Williams-Wynn baronets | Bill Congreve | William Congreve | Walter Norris Congreve | Wynn baronets | Sir William Congreve, 2nd Baronet | Naylor-Leyland baronets | Hulse baronets | Gell baronets | Garrard baronets | Crawley-Boevey baronets | Congreve baronets | Codrington baronets | Chadwyck-Healey baronets | Cave-Browne-Cave baronets | Blackett baronets | Acland baronets | Wilmot baronets | Slingsby baronets | Sir William Congreve | Nugent baronets | Mosley Baronets | Mackworth baronets | Littleton baronets | Grant baronets | Graham Baronets | Gethin baronets | Frederick baronets | Esmonde baronets | Edmonstone baronets |