Pleisson married Olivier de Clisson 1221. Olivier was born Abt 1205; died 1262. [Group Sheet]
Olivier married Aliénor des Roches 1258. Aliénor (daughter of Geoffroy des Roches) was born Abt 1240. [Group Sheet]
Guillaume married Jeanne Bertrand de Bricquebec Abt 1280. Jeanne (daughter of Guillaume Bertrand de Bricquebec and Jeanne de Nesle) was born Abt 1260. [Group Sheet]
Olivier married Isabeau de Craon Abt 1300. Isabeau (daughter of Maurice de Craon and Mahaud de Mechelen) was born Abt 1280; died 30 Jul 1350; was buried , Église des Cordeliers d'Angers, Anjou (Maine-et-Loire), France. [Group Sheet]