| William "De Fortibus" De Vivonia (maid. name 1) | |
| B: | 1225 |
| Albermarle, Scotland | |
| D: | 22 May 1259 |
| Wells, Somerset, England | |
| Maud De ferrers (maid. name 1) |
| Maud De ferrers (maid. name 1) | |
| B: | 1228 |
| Derby, England | |
| M: | 30 Jul 1248 |
| Poitiers, Aquitaine, France | |
| D: | 12 Mar 1299 |
| Somerset, England | |
| Hugh Vivonne (maid. name de) | |
| B: | 1227 |
| Chewton, Somerset, England | |
| Helewyse Vivonne (maid. name de) |
| Helewyse Vivonne (maid. name de) | |
| B: | 1229 |
| Chewton, Somerset, England | |
| D: | 1250 |
| Hugh Vivonne (maid. name 1) |
| Hugh Vivonne (maid. name 1) | |
| B: | 1195 |
| Chewton, Somerset, England | |
| D: | 1249 |
| Wells, Somerset, England | |
| Mabel Malet (maid. name 1) |
| Mabel Malet (maid. name 1) | |
| B: | 1195 |
| Curry Malet, Somerset, England | |
| M: | 1222 |
| Skipton Malet, Somerset, England | |
| D: | 1293 |
| Albernarie, Strathclyde, Scotland | |
| GUILLAUME WILLIAM VIVONNE FORTIBUS (maid. name 1) | |
| B: | 1175 |
| Holderness, Yorkshire, England | |
| D: | 26 Mar 1242 |
| Thornton Curtis, Lincolnshire, England | |
| Aveline Baroness Stanstead, Essex de Montfichet | |
| B: | 1177 |
| Stanstead, Essex, England | |
| D: | Nov 1239 |
| Thornton Curtis, Lincolnshire, England | |
| Sir Hugh Baron de Chewton Sheriff of Somerst & Dorset de Vivonia | |
| B: | 1195 |
| Chewton, Somerset, England | |
| D: | 1249 |
| Wells, Somerset, England | |
| William II "De Fortibus" 3rd Earl of Albermale De Forz | |
| B: | 1175 |
| Aumale, Seine-Maritime, Haute-Normandie, France | |
| D: | 26 Mar 1242 |
| East Riding, Yorkshire, England | |
| Aveline Baroness Stanstead, Essex de Montfichet | |
| B: | 1177 |
| Stanstead, Essex, England | |
| M: | 1215 |
| England | |
| D: | Nov 1239 |
| Thornton Curtis, Lincolnshire, England | |
| William Baron Vivonne Fortibus de Forz (maid. name 1) | |
| B: | 1155 |
| Fors, Deux-Sevres, Poitou-Charentes, France | |
| D: | 1194 |
| Burstwick, Yorkshire, England | |
| Hawise 2nd Countess Holderness, Yorkshire de Albemarle (maid. name 1) | |
| B: | 1159 |
| Holderness, Yorkshire, England | |
| D: | 11 Mar 1214 |
| Holderness, Yorkshire, England | |