Sir | Humphrey Bogart | Sir Walter Scott | baronet | Baronet | Old Trafford | Hubert Humphrey | Sir Arthur Conan Doyle | 4th United States Congress | Sir Robert Peel | 4th | Humphrey Gilbert | Humphrey Lyttelton | Sir Arthur Harris, 1st Baronet | Sir Raylton Dixon | Sir Harold Hillier Gardens | Sir Fitzroy Maclean, 1st Baronet | John Montagu, 4th Earl of Sandwich | California's 4th State Assembly district | Sir Francis Baring, 1st Baronet | Thomas Howard, 4th Duke of Norfolk | Sir William Temple, 1st Baronet | Charles Lennox, 4th Duke of Richmond | Benedict Calvert, 4th Baron Baltimore | Windham Wyndham-Quin, 4th Earl of Dunraven and Mount-Earl | Trafford Park | Sir Richard Fanshawe, 1st Baronet | Hubert H. Humphrey Metrodome | George Hamilton-Gordon, 4th Earl of Aberdeen | Albert Grey, 4th Earl Grey |
In 1963 Turner married Elizabeth Clare de Trafford, daughter of Captain Edmund Hubert de Trafford (a grandson of Sir Humphrey de Trafford, 2nd Baronet) and his wife Hon.
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.
In 1926, he purchased the Newsells Park Estate, Barkway near Royston, Hertfordshire as a home for his family and established a stud farm there, from which he bred most of his famous racehorses including Alcide who won the 1958 St. Leger Stakes and the 1959 King George VI and Queen Elizabeth Stakes and Parthia, who won the 1959 Epsom Derby.