They had two children and one grandson, Jacques, Sieur de Cairon, born in 1673 and still reported as a Huguenot in 1749.
Le Sueur wrote, according to Huet, easy and clever verses; none have been printed.
The introductory parts of Geographiæ sacræ pars prior (Phaleg, de S.
Bochart, Cadomi, 1646) incorporate some of his Latin verses.