Isabel de Clare, b: 1172


			^{Gilbert Fitzrobert Marshall}^{b.1075 Cheddar, Somerset, England d.1129 Marlborough, England}

		^{John Marshall}^{b.1105 Pembroke, Wales d.1165 Pembroke, Wales}	^{Mary Alice de Venuz}^{b.1096 Pembroke, Wales d.1119 Pembroke, Wales}

	^{William Marshal}^{b.1146 Hamstead Marshal, England d.1219 Caversham, England}

		^{Sibilla de Salisbury}^{b.1139 Pembroke, Wales d.1147 Pembroke, Wales}

^{Isabel Marshal}^{b.1200 Pembroke, Wales d.1239 Düring, Germany}			^{Gilbert de Clare}^{b.1100 Tonbridge, Kent, England d.1148 Tintern, Wales}

		^{Richard de Clare}^{b.1125 Tunbridge Wells, England d.1176 Leinster, Ireland}	^{Isabel de Beaumont}^{b.1102 Leicester, England d.1172 Carmarthen, Wales}

	^{Isabel de Clare}^{b.1172 Ireland d.1220 Pembroke, Wales}		^{Diarmaid Mac Murchadha}^{b.1110 Leinster, Ireland d.1171 Ferns Co., Wexford, Ireland}

		^{Aoife of Leinster}^{b.1145 Leinster, Ireland d.1188 Waterford, Ireland}	^{Mór Uí THUATHAIL}^{b.1114 Leinster, Ireland d.1191 Wexford, Ireland}