The Apostolic Church Elder Irenaeus claims that Pope Linus is the Linus mentioned by St. Paul in his 2 Timothy 4:21. The passage by Irenaeus (Adv. haereses, III, iii, 3) reads:
"After the Holy Apostles (Peter and Paul) had founded and set the Church in order (in Rome) they gave over the exercise of the episcopal office to Linus. The same Linus is mentioned by St. Paul in his Epistle to Timothy. His successor was Anacletus."
In Liber Pontificalis it was claimed that Linus was buried on the Vatican Hill. In the 7th century an inscription was found near the confessional of St Peter, which was believed to contain the name Linus.