1884 - 1974 (90 years)
| Lord Colwyn Iestyn John PHILIPPS, 3rd Viscount St Davids | |
| B: | 30 Jan 1939 |
| D: | 26 Apr 2009 |
| Augusta Victoria Correa y Larra?n Ugarte | |
| M: | 1965 |
1940-2005
| Honourable Rowena Frances PHILIPPS | |
| B: | 1940 |
| D: | 2005 |
| Jestyn Reginald Austin Plantagenet PHILIPPS, 2nd Viscount St Davids | |
| B: | 19 Feb 1917 |
| D: | 10 Jun 1991 |
| Doreen Guinness Jowett | |
| M: | 5 May 1938 |
| Elisabeth Joyce Woolf | |
| M: | 15 Oct 1954 |
| Honourable Lelgarde De Clare Elizabeth PHILIPPS | |
| B: | 23 Sep 1918 |
| D: | 1984 |
| Colin Charles Evans | |
| M: | 1950 |
|
| Elizabeth Frances ABNEY-HASTINGS, Viscountess St Davids | |
| B: | 10 Jun 1884 |
| D: | 12 Dec 1974 |
| John Wynford PHILIPPS, 1st Viscount St Davids | |
| B: | 30 May 1860 |
| M: | 27 Apr 1916 |
| D: | 28 Mar 1938 |
