Thomas de Clare, b: 1245 - Tonbridge, England


			^{Gilbert de Clare}^{b.1182 Hertford, England d.1230 Penrose, Brittany, France}

		^{Richard III de Clare}^{b.1222 Gloucestershire, England d.1262 Ashenfield Man, England}	^{Isabel Marshall}^{b.1206 Pembrokeshire, Wales d.1239 Berkhamstead, England}

	^{Thomas de Clare}^{b.1245 Tonbridge, Kent, England d.1287 Thomond, Ireland}		^{John de Lacy}^{b.1192 Lincoln, England d.1240 Stanlaw, Chester, England}

^{Margaret de Clare}^{b.1280 Thomond, Ireland d.1333 Badlesmere, England}		^{Maud de Lacy}^{b.1223 Lincoln, England d.1288}	^{Margaret de Quincy}^{b.1208 Lincoln, England d.1265 Clerkenwell, England}

^{Maud de Clare}^{b.1276 Gloucestershire, England d.1326}			^{Maurice II Fitz Gerald}^{b.1190 d.1257 Youghal Monastery}

		^{Maurice Fitz Maurice}^{b.1250 d.1286 Ross, England}	^{Juliana de Cogan}^b.1195 d.

	^{Juliana Fitz Maurice}^{b.1249 Dublin, Ireland d.1300 Thomond, Ireland}		^{Stephen Longespee}^{b.1216 Salisbury, England d.1260 Sutton, England}

		^{Emmaline de Longespee}^{b.1252 Ulster, Ireland d.1291}	^{Emeline de Ridelisford}^{b.1220 d.1276}