Pope Saint Nicholas I (–867)

Pope Saint Nicholas I (Latin: Nicholaus I; c. 800 – 13 November 867), 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 asserted that the pope should have suzerain authority over all Christians, even royalty, in matters of faith and morals.