Guy was the son of Hamon de Laval and Hersende de Bretagne. The date and place of his birth have not been found.
He had two marriages/partners. His first wife was Denise de Mortain, who he married in ABT 1085. The place has not been found. Their two known children were Guy III (c1080-1146) and Aliénor (?-?).
His second wife was Cécile. They were married, but the date and place have not been found. They had no known children.
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Hamon de Laval |
Guy I de Dénéré |
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Berthe de Tosny |
Roger I de Tosny |
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Godehilde |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | FROM 1095 | seigneur de Laval (Mayenne) |
Note 1