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From Rodovid EN

Lineage	Blois-Châtillon
Sex	Male
Full name (at birth)	Olivier de Blois-Châtillon
Parents ♂ Jean Ier de Blois-Châtillon [Blois-Châtillon] ♀ Marguerite de Clisson [Clisson]

Events

title: Comte de Penthièvre

marriage: ♀ Jeanne de Lalaing [Lalaing]

From grandparents to grandchildren