William de Ros

↓→ William de Ros B ABT 1244 D	↓→ William de Ros B ABT 1192 in Helmsley, Yorkshire, England D 1264 in , , France M	↓→ Robert de Ros B 1170 in Helmsley, Yorkshire, England D 11 Dec 1226 in Helmsley, Yorkshire, England M 1191 in Haddington, Lincolnshire, England	↓→ Everard de Ros B 1144 in Helmsley, Yorkshire, England D 1183 M 1166 in Helmsley, Yorkshire, England
			↓→ Rohese Trussebut B 1146 in Hamlake, Yorkshire, England D Dec 1196 in Helmsley, Yorkshire, England
		↓→ Isabel Canmore d'Avenal B ABT 1167 in Edinburgh, Midlothian, Scotland D	↓→ William I the Lion B 1143 in , , Scotland D Dec 1214 in Sterling, Sterlingshire, Scotland M
			↓→ Isabel d'Avenal B 1138 in Sandhurst, Gloucestershire, England D
	↓→ Lucy Fitzpiers B ABT 1196 in Helmsley, Yorkshire, England D ABT 1266	↓→ Piers Fitzherbert B ABT 1166 in , Gloucestershire, England D Jun 1235 in Reading, Berkshire, England M	↓→ Herbert Fitzherbert B ABT 1130 in , Gloucestershire, England D 1204 in Blaen, Llyfni, Wales M
			↓→ Lucy de Holland B D
		↓→ Alice Fitzrobert B ABT 1186 in Warkworth, Northumberland, England D	↓→ Robert Fitzroger B ABT 1162 in Warkworth, Northumberland, England D M
			↓→ Margery de Chesney B ABT 1166 in Horsford, Norfolk, England D 22 Nov 1214 in Warkworth Castle, Alnwick, Northumberland, England