Details from Wikipedia

Mignard is a French surname. Notable people with the surname include:

• François Mignard (born 1949), French astronomer
  • 12898 Mignard, main belt asteroid discovered by François Mignard
• Nicolas Mignard (1606–1668), French painter
• Paul Mignard (1639–1691), French painter and etcher
• Pierre Mignard (1612–1695), French painter
• Pierre II Mignard (1640-1725), French painter and architect

General info from Wikipedia.org