Philip de L szl (1869-1937) was born into a humble Hungarian family in Budapest and rose to become the preeminent portrait artist working in Britain between 1907 and 1937. He painted nearly 3,000 portraits, including those of numerous kings and queens, four American presidents, and countless members of the European nobility. "Has any one painter ever before painted so many interesting and historical personages?" asked his contemporaries. There has been no biography of him since 1939, and this new account of both his life and his work draws on previously untapped material from the family archive of over 15,000 documents, to which the author has had unrivaled access. It establishes the intrinsic importance of his art and re-positions him in his rightful place alongside his great contemporaries John Singer Sargent, Sir John Lavery, and Giovanni Boldini.