Léopold-Guillaume de Habsbourg
Cossiers enjoyed the patronage of the governors of the Southern Netherlands such as Cardinal-Infante Ferdinand and Archduke Leopold Wilhelm of Austria. After the death of Rubens in 1640 he was recognized as one of the leading history painters in Flanders and he received many commissions for Counter-Reformation altarpieces. He also was a portrait painter to the rich bourgeoisie.