Guillaume Derrien

• 
• Born on August 1, 1734 in La Roche-Derrien
• Deceased on July 11, 1742 in Pommerit-Jaudy, at the age of 7 years

Parents

• Yves Derrien (1695 - 1742), écuyer, seigneur de Kerbérennès
• Marie-Anne de Kerliviou (1691 - 1757)