Family: Jean De Treveznou / Marguerite D'avaugour-De Harcourt (F22698)
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 | Hervé Vi Dit Le Jeune De Leon-Rohan (1273-1337) |
 | Jeanne De Montmorency (1286-1341) |
| Henri D'avaugour, IV (1280-1334) |
| Jeanne D'harcourt (1275-1346) |
| Jean De Treveznou (1300- )
|
| Marguerite D'avaugour-De Harcourt (1305-1375)
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| Marie De Léon (1340-1368)  |