http://blogs.getty.edu/iris/getty-union-list-of-artist-names-ulan-linked-open-data/

"The Union List of Artist Names (ULAN)® is a resource containing more than 650,000 names and biographical information for current and historical artists, architects, patrons, workshops, firms, museums, and other people and groups associated with the creation and history of art, architecture, and other works of cultural heritage. "