In the Communicantes of the First Eucharistic Prayer (Roman Canon), the names of some popes are mentioned: Linus, Cletus, Clement, Sixtus and Cornelius. Linus, Cletus and Clement are the immediate successors of Saint Peter and were ordained bishops by Peter himself. Some scholars suggest that ‘Sixtus’ refers to Sixtus II (257-258) and Cornelius was pope from 251 to 253.
