Bonifacio IV

Bonifacio IV was a pope of the Roman Catholic Church who reigned from 608 to 615 AD. He is notably recognized for his role in transforming the celebration of All Saints' Day, moving it from May 13 to November 1 in an effort to supplant the pagan festival of Samhain, which celebrated the return of spirits. His actions were part of a broader strategy to Christianize existing pagan traditions and to establish a more unified religious calendar.