In 1572, Pope Gregory XIII united the Order of Saint Lazarus in perpetuity with the Crown of Savoy. Emmanuel Philibert, Duke of Savoy, merged it with the Savoyan Order of Saint Maurice, and thenceforth the title of Grand Master of the Order of Saints Maurice and Lazarus was hereditary in that house. The pope gave him authority over the vacant commanderies everywhere, except in the states of the King of Spain, which included the greater part of Italy. In England and Germany, these commanderies were suppressed by the Protestant reformation.