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 | Countess of Cornwall Isabel Marshall (1200-1240)
|
 | Isabel de Clare (1226-1264)  |
 | 2nd Earl of Lincoln John de Lacy (1192-1240)
|
 | Countess of Lincoln Margaret de Quincy (1208-1266)
|
 | Eighth Earl of Clare, Sixth Earl of Hertford, 6th Earl of Gloucester Richard de Clare, IV (1222-1262)
|
| Maud de Lacy (1223-1289)
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| Marchioness of Montferrat Isabel de Clare (1240-1271) |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
