Louise Marie Madeleine Fontaine
Louise de Fontaine was born in Paris, in the parish of Saint-Roch, on 28 October 1706. Her baptism act was as follows:
Alexis Fontaine des Bertins
Fontaine was born in Claveyson. He first got a taste for maths by reading the "Géométrie de l'infini" of Fontenelle and gave solutions to the problems of the tautochrone curve, the brachistochrone curve and orthogonal trajectories. 
He was elected a member of the Académie des sciences in 1733. He died, aged 67, in Cuiseaux.