William fitz Robert, 2nd Earl of Gloucester
1116 - 1183 (67 years)(Notes: You may have to scroll down or right to see chart.)
| Isabella de Clare, Countess of Gloucester | |
| B: | Bef 1176 |
| D: | 14 Oct 1217 |
| Geoffrey de Mandeville, 4th Earl of Essex | |
| D: | 23 Feb 1215/16 |
| Richard de Clare, 5th Earl of Hertford 6th Earl of Gloucester | |
| B: | 04 Aug 1222 |
| D: | 14 Jul 1262 |
| Waltham, Kent, England | |
| Maud de Lacy, Countess of Gloucester | |
| B: | 25 Jan 1222/23 |
| Lincoln, Lincolnshire, England | |
| D: | Between 1287 and 10 Mar 1288/89 |
| Megotta de Burgh | |
| D: | Nov 1237 |
| Gilbert de Clare, 4th Earl of Hertford 5th Earl of Gloucester | |
| B: | 1180 |
| D: | 25 Oct 1230 |
| Brittany, France | |
| Isabel Marshal | |
| B: | 09 Oct 1200 |
| Pembroke, Pembrokeshire, Wales | |
| D: | 17 Jan 1239/40 |
| Berkhamsted, Hertfordshire, England | |
| Amice FitzWilliam, 4th Countess of Gloucester | |
| B: | Abt 1160 |
| D: | 1220 |
| Richard de Clare, 3rd Earl of Hertford 4th Earl of Gloucester jure uxoris | |
| B: | Abt 1153 |
| Tonbridge, Kent, England | |
| D: | 1217 |
| Oxfordshire, England | |
| William fitz Robert, 2nd Earl of Gloucester | |
| B: | 23 Nov 1116 |
| D: | 23 Nov 1183 |
| Hawise de Beaumont | |
| D: | 24 Apr 1197 |