Family: Gilbert III (Magna Charta Baron) De Clare (maid. name 1) / Isabel countess Cor marshall

Paternal line Gilbert III (Magna Charta Baron) De Clare (maid. name 1)
Richard III FitzRoger, (3rd Earl of Hertford)(4th Earl of Gloucester) De Clare 1153 - 1217  (64 years)	_	Amicie FitzWilliam de Mellent CAEN (maid. name 1) 1160 - 1224  (64 years)
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Roger (2nd Earl of Hertford ) De Clare (maid. name 1) 1116 - 1173  (57 years)	_	Maud Matilda Countess Arundel SaintHilary 1132 - 1193  (61 years)
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Richard FitzGilbert, (3rd Earl of Clare)( 3rd Lord of Tonbridge) De Clare (maid. name 1) 1090 - 1136  (46 years)	_	Alice Adeliza Chester le Meschines 1096 - 1136  (40 years)
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Gilbert fitzrichard (1 st Earl of Cardigan)(2nd Earl of Clare) De clare (maid. name Of tonbridge) 1065 - 1114  (49 years)	_	Adelise Adeliza Alice De Clermont (maid. name 1) 1065 - 1117  (52 years)
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Richard, FitzGilbert, de Clare (maid. name 1) 1035 - 1090  (55 years)	_	Rohese Giffard (maid. name 1) 1034 - 1117  (82 years)
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Gilbert FitzGodfrey Count d' Eu & Brionne (maid. name 1) Abt 980 - 1040  (~ 60 years)	_	Constance d' Eu (maid. name 1) 1009 -

Paternal line Isabel countess Cor marshall
William Marshal 1146 - 1219  (73 years)	_	Isabel De Clare 1172 - 1220  (48 years)
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John FitzGilbert Marshal 1109 - 1165  (56 years)	_	Sibyl deSalisbury 1127 - 1147  (20 years)
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Gilbert Giffard Marshal 1075 - 1130  (55 years)	_	Mary Margarite deVenuz 1085 - 1119  (34 years)