Mercedarian friar. In 1225, he accompanied Saint Peter Nolasco to Algiers where they freed 219 Christians who had been enslaved by Muslims. As part of that mission, Guglielmo stayed as a hostage to guarantee the payment of the remainder of the ransom for those slaves; he lived there the rest of his life, preaching Christianity to whomever would listen.
- “Blessed Guglielmo of San Romano“. CatholicSaints.Info. 5 April 2017. Web. 28 April 2017. <>