Quinsac was a painter of the French School known as Academic art, a specialist in mythological and allegorical subjects, figures and landscapes.
From 1880 he exhibited regularly to the Hall of the French Artists of which he became a member in 1887.
He received an honourable mention during the exhibition of 1884, a medal of third class to the World Fair of 1889, as well as a travel grant.
He was named Chevalier de la légion d’Honneur in 1903.
This article about a French painter born in the 19th century is a stub.