Louis de La Vergne-Montenard de Tressan or Louis III de La Vergne de Tressan (-) was a French cleric of the Roman Catholic Church, Archbishop of Rouen (France) from to .
He was born in Tressan (France) in . He was the second son of Jérémie de Tressan; from what is considered a very old Languedoc family.[1]
His father, Maréchal de camp of Louis XIV, married Marguerite de Béon (House of Béon-Luxembourg) on . His brother was François de La Vergne, Marquess of Tressan.
Louis de La Vergne de Tressan received a licence in theology from the University of Paris.[2]
He was Count of Lyon and Canon of the Saint John the Baptist Lyon Cathedral, then First Almoner of Philippe I, Duke of Orléans.[3] In this capacity he advocated renewed persecution of Huguenots, which became law under Louis Henri, Duke of Bourbon.
He was selected Bishop of Nantes (France) on, confirmed on and ordained on .[4] He stayed in Nantes from to .[4]
He was selected Metropolitan Archbishop of Rouen on and confirmed on .[5]
He died on in Rouen and was replaced by Nicolas de Saulx de Tavannes (it), Bishop of Châlons-en-Champagne.[6]
His appointed surgeon in Rouen was Claude-Nicolas Le Cat.