Pope St. Nicholas I

Pope St. Nicholas I, also called Saint Nicholas the Great, was Pope from 24 April 858 to his death in 867. He is remembered as a consolidator of papal authority and power, exerting decisive influence upon the historical development of the papacy and its position among the Christian nations of Western Europe. Nicholas I asserted that the pope should have suzerain authority over all Christians, even royalty, in matters of faith and morals. He is venerated as a saint in the Catholic Church, with a feast day on 13 November.