Béatrice was the daughter of Rasse VII de Gâvre and Jeanne de Wavrin. The date and place of her birth have not been found.
Her husband was Guy IX de Montmorency-Laval, who she married in 1286. The place has not been found. Their eight known children were Isabeau (?-1322), Guy X (c1300-1347), Rasès (?->1348), Foulques (?-1358), Pierre (?-1357), Jean (?-?), Catherine (?-?) and Jeanne (?-?).
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Rasse VII de Gâvre |
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Jeanne de Wavrin |
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Note 1