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 | 4th Earl of Oxford Hugh de Vere (1185-1263)
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 | Hawise de Quincy (1178-1263)
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 | 5th Earl of Oxford Robert de Vere (1240-1296)  |
 | 2nd Baron of Okehampton John de Courtenay (1224-1274) |
 | Isabel de Vere (1228-1300)
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 | 3rd Baron of Okehampton Sir Hugh de Courtenay (1249-1291) |
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.
