Isabel de Vesci

↓→ Isabel de Vesci B D	↓→ William de Vesci B D 1297 M	↓→ William de Vesci B D 1253 M	↓→ Eustace de Vesci B 1169 in Alnwick, Northumberland, England D 1216 M
			↓→ Margaret Fitzwilliam B ABT 1173 in , , Scotland D
		↓→ Agnes de Ferrers B 1225 in , , England D

	↓→ Agnes de Ferrers B D 11 May 1290	↓→ William de Ferrers B 1193 in , Derbyshire, England D 24 Mar 1254 in , Huntingdon, England M	↓→ William de Ferrers B ABT 1168 in Ferrers, Derbyshire, England D 22 Sep 1247 in , , England M 1192 in , Derbyshire, England
			↓→ Agnes Kevelioc de Meschines B ABT 1174 in , Staffordshire, England D Nov 1247 in , , England
		↓→ Sibyl Marshall B ABT 1201 in Pembroke, Pembrokeshire, Wales D 27 Apr 1245 in , , England	↓→ William Marshall B ABT 1146 in Pembroke, Pembrokeshire, Wales D 14 May 1219 in , , England M 1189
			↓→ Isabella de Clare B ABT 1172 in Pembroke, Pembrokeshire, Wales D 1220 in Pembroke, Pembrokeshire, Wales