Duke of Windsor was a title in the Peerage of the United Kingdom. It was created on 8 March 1937, for the Prince Edward, former King Edward VIII, following his abdication in December 1936. The dukedom takes its name from the town where Windsor Castle, a residence of English monarchs since the time of Henry I, following the Norman Conquest, is situated. Windsor has been the house name of the Royal Family since 1917.