| | Guillaume IV de Lesguen – Eliette de Saint-Goueznou – | | | | | | | | Guillaume III de Lesguen – | | | | Guillaume II de Lesguen 1380– | | |
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| | | Perceval de Saint-Goueznou 1443–1522 Isabelle de Keribert 1475–1564 | | | | Perceval de Saint-Goueznou 1415–1496 Azénore de Kermorvan 1420–1497 | | | | Hervé de Kermorvan 1392–1470 Marguerite de Kerscao 1400–1465 | | |
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