His father, William Harcourt Isham Mackworth (1806—1872), a younger son of Sir Digby Mackworth, the 3rd Baronet, took the additional surname Dolben after he married Frances, the heiress of Sir John English Dolben, the 4th Baronet.
Williams-Wynn baronets | Wynn baronets | Sir Herbert Mackworth, 1st 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 | Winthrop Mackworth Praed | Wilmot baronets | Slingsby baronets | Sir Herbert Mackworth | Nugent baronets | Mosley Baronets | Mackworth baronets | Littleton baronets | Grant baronets | Graham Baronets | Gethin baronets | Frederick baronets | Esmonde baronets | Edmonstone baronets | Dolben baronets | Dillington baronets |