Havoise married Olivier de Tinténiac Abt 1280. Olivier was born Abt 1250. [Group Sheet]
Olivier married Eustaisse de Châteaubriant Abt 1305. Eustaisse (daughter of Geoffroy de Châteaubriant and Isabeau de Machecoul) was born Abt 1290. [Group Sheet]
Jean married Jeanne de Dol Abt 1325. Jeanne (daughter of Jean de Dol) was born Abt 1305. [Group Sheet]
Isabeau married Jean de Laval Abt 1350. Jean (son of André de Laval and Eustachie de Bauçay) was born Abt 1320; died 1398. [Group Sheet]