He attended the École nationale supérieure des arts décoratifs, under Charles Genuys [fr].
[1] De Waroquier was a teacher of decorative composition at the École Estienne,[1] and of painting at the Académie Scandinave in Paris.
[2] Noted students which worked under him included Inés Puyó,[3] Heini Waser, and Maria Helena Vieira da Silva.
[1] De Waroquier died on December 31, 1970, in Paris, and is buried at Père Lachaise Cemetery.
[5] His work is found in many public museum collections, including Musée d'Orsay, Paris;[6] Royal Museums of Fine Arts of Belgium, Brussels;[7] and Musée Laurier [fr], Victoriaville, Quebec, Canada.