Guy Stair Sainty, as a reputed expert in the field, has written extensively on the history of Orders of Knighthood and on the legitimacy of surviving chivalric institutions. His interest in the Constantinian Order began in the early 1970s, since which time his researches took him to Naples, Rome, and Madrid where numerous hitherto unexamined documents have enabled him to shed new light on the Order’s history. After studying law in London, he worked first for a London art gallery before founding his own New York gallery in 1982, moving it to London in 2005.