Huguette Marcelle Clark / uː ɡ ɛ t k l ɑː r k / (June 9, 1906 – May 24, 2011) was an American painter, heiress, and philanthropist, who became well known again late in life as a recluse, living in hospitals for more than 20 years while her various mansions remained unoccupied.She is the subject of the No. 1 bestselling biography Empty Mansions and the planned film based on the book.