Provenance Research: Paul Cailleux in NEPIP

Portrait of a Woman with a Corsage of Blue Flowers - a provenance gap?

Paul Cailleux also known as Paul de Cayeux and the Marquis de Cayeux, was the president of the French art dealers association. In 1946 his name appears on the Art Looting Investigation Unit's Red Flag list of names with the following mention:

Cailleux, Paul. Paris, 136 rue du Fbg St Honore. Dealer in contact with Rochlitz, Wuester, Frau Dietrich, Haberstock. Knew Lohse, who claims to have freed his wife from a concentration camp. Authority on 18th century French art. President of the Art Dealers Association, Paris. 

The name "Cailleux"  appears in the ownership history of numerous artworks, some of which have gaps or uncertainties in the provenance between 1933-1945.

Here are a few examples from the Museum of Fine Arts in Boston (not currently on view).