The Artistic Legacy of Chs. Van Loo Chs. Van Loo was a Belgian painter and draftsperson who was active between 1850 and 1924. His professional contributions to the visual arts include works that have been preserved in significant collections. One of his notable works is the Portrait of Willem Laatsman (1806-1883), which was created in 1904. This piece is held within the collection of the Museum Catharijneconvent, Utrecht.