- 13th Century mosaic by Lorenzo Cosmati at the entry of the Monastery San Tommaso in Formis of the Trinitarian Order (ordre de la Tr鑣 Sainte Trinit?et des captifs; dit ordre des Trinitaires ou Mathurins; trinitaire; Der Trinitarierorden) situated on the Caelian Hill. - The mosaic depicts Christ between two freed slaves. The mosaic also depicts the Seal of the Trinitarian Order. The founding intention for the Order was the ransom of Christians held captive by non-Christians during the time of the Crusades. Rome; Italy. 2020.