Baron de Longueuil

His son and the third baron, Charles-Jacques Le Moyne (1724-1756), was reported missing in action in the aftermath of the Battle of Lake George, during the Seven Years' War.

His wife Marie-Anne-Catherine Fleury Deschambault refused to acknowledge his death until 1759, and shortly after the battle gave birth to twin girls.

After the conquest of New France, the descendants of Charles le Moyne maintained that, since Britain had promised to respect the ancient land tenures, it was obliged to recognize Longueuil as a barony.

This title was conferred on his ancestor, Charles Le Moyne, by letters-patent of nobility signed by King Louis XIV in the year 1700.

[5][6] In 2007, an uninhabited island of the Saint Lawrence River formerly known as île Verte (between Montreal and Longueuil) was renamed to Îlot de la Baronnie in honour of them.