Julie Manet was the daughter of artist Berthe Morisot and her husband, Eugène Manet [brother of the artist Edouard Manet]. Julie married Ernest Rouart, one of the five children of Henri Rouart [1833-1912], an engineer, collector and artist. Henri was intimately involved with the Impressionist painters, and himself exhibited in all the official Salons between 1868-1872 as well as with the Impressionists from 1876-1996 (except 1882). Ernest Rouart and his siblings (Hélène, Alexis, Eugène, and Louis) inherited his father's collection. The children retained some family portraits and dispersed the remainder of the Rouart collection at auction on on 9 December 1912 in Paris.
Blanche, Jacques-Emile. "Notes sur la peinture moderne (a propos de la collection Rouart) inPropos de Peintre. 3 vols. Paris, 1919-1928:II De David à Degas: 245+
Grammont, Claudine. "Le legs Rouart: reunion de famille." Beaus-Arts Magazine 161 (October 1997): 100-105.
Lefranc, Celine. "Les tribulations d'une collection." Connaissance des Art 544 (November 1997): 110-115.