Baron Gustave Salomon de Rothschild [1829-1911], Paris; possibly by inheritance to his son-in-law, Edward Albert Sassoon, 2nd bt. [1856-1912], London;[1] probably by inheritance to his son, Sir Philip Albert Gustave David Sassoon, 3rd bt. [d. 1939], London, until at least 1921.[2] (Duveen Brothers, Inc., London and New York); sold to Ralph Harman [1873-1931] and Mary Batterman [d. 1951] Booth, Grosse Pointe, Michigan, by 1926;[3] gift 1946 to NGA. [1] According to the estate papers for Gustave de Rothschild, Boltraffio's "_Portrait d'un jeune homme_" hung in the gallery in his Paris house at 23 Avenue de Marigny. It does not seem to have been left to Edward Sassoon directly, but was part of a lot of furniture and objects "à tirer au sort" [to be drawn by lot] (see letter of 30 July 1998 from Tamsin Black, assistant archivist, The Rothschild Archive, in NGA curatorial files). [2] The painting was published in 1921 as being owned by Sir Philip Sassoon. [3] The painting was lent by the Booths to a 1926 exhibition at the Detroit Institute of Arts.