Jean-Olivier de Rocquancourt

• 
• Born on October 27, 1722 in Guingamp
• Deceased on December 28, 1722 in Plouisy, in infancy

Parents

• Jean-Claude de Rocquancourt (1683 - 1742), maire de Guingamp
• Louise-Marie de La Grève ( - 1730), dame de La Fontaine-blanche