1910 - 1979 (68 years)
| Thomas Patrick John Anson, 5th Earl of Lichfield | |
| B: | 25 Apr 1939 |
| D: | 11 Nov 2005 |
| Gerald Cavendish GROSVENOR, 6th Duke of Westminster | |
| B: | 22 Dec 1951 |
| D: | 9 Aug 2016 |
| Lieutenant Colonel Robert George GROSVENOR, 5th Duke of Westminster | |
| B: | 24 Apr 1910 |
| D: | 19 Feb 1979 |
1912-1987
| Honourable Viola Maud Lyttelton | |
| B: | 10 Jun 1912 |
| M: | 3 Dec 1946 |
| D: | 3 May 1987 |
