- Born on August 13, 1623 in Josselin
- Baptized at église Notre-Dame du Roncier
Parents
- Yves Gatechair ( - 1663), écuyer, seigneur de Launay, notaire et procureur
- Jacquette Mouezo
Family
- Married with Suzanne de Kerrel (1629 - ), issuing
Julienne Louise (1664 - 1718)