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 | Latin Emperor of Constantinople, King of Jerusalem Jean de Constantinople de Brienne, II (1168-1237)
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 | Empress Consort Berenguela de León (1198-1237) |
 | Viscount de Maine Raoul de Beaumont, VIII (1172-1235) |
 | Agnès de la Flèche (1212-1238) |
 | Vicomte de Beaumont Louis d'Acre de Brienne (1227-1297)
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 | Agnes de Beaumont (1230-1301)
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| Marguerite de Brienne Beaumont (1260-1328) |
| Vicomte John de Beaumont (1254-1306) |
| Isabella de Beaumont (1257-1334) |
| Marie deBeaumont de Brienne (1265-1334) |
| Henry Buchan de Beaumont (1272-1349) |
| Jeanne de Beaumont (1263-1310)  |
| Bishop Louis Durham de Beaumont (1255-1333) |
| Jean de Brienne (1255-1306) |
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.
