Isabel Le Marshall, b: 1200


			^{Roger de Clare}^{b.1125 Tunbridge Castle, Eng d.1173 Oxfordshire England}

		^{Richard de Clare}^{b.1155 Hertfordshire d.1217}	^{Maud (Matilda) de Saint Hilary}^{b.1132 Burkenham, England d.1193 Norfolk, England}

	^{Gilbert de Clare}^{b.1180 d.1230}		^{William "Mafonache" FitzRobert}^{b.1116 Gloucestershire, England d.1183 Spms}

^{Richard de Clare}^{b.1222 Gloucestershire, England d.1262 Ashenfield Man, England}		^{Amice FitzRobert}^{b.1157 Gloucestershire, England d.1224}	^{Hawise de Beaumont}^{b.1134 Leicester, England d.1197}

^{Avicia de Clare}^{b.1220 Plumpton, England d.1283}			^{John "The Marshall" FitzGilbert}^{b.1105 Pembroke, Wales d.1164}

		^{William Marshall}^{b.1146 Pembroke, Wales d.1219 Caversham Man, England}	^{Sibilla (Sibyl) de Salisbury}^{b.1120 of, Wales d.}

	^{Isabel Le Marshall}^{b.1200 Pembroke, Wales d.1239 Berkhamstead, England}		^{Richard "Strongbow" de Clare}^{b.1130 Tunbridge, Kent, England d.1176 Dublin, Leinster, England}

		^{Isabel de Clare}^{b.1173 Pembroke, Wales d.1220 Pembroke, Wales}	^{Eva MacMorough of Leinster}^{b.1140 Lancaster, England d.1186}