St Matthew is one of Jesus Disciples. There is no Church of Rome at that time. Therefore there is no Pope. Now just who was the first Pope & when, sorry I have no idea whatsoever.
The Roman Catholic Churchconsiders him to be the first pope, ordained by Jesus in the "Rock of My Church" dialogue in Matthew 16:18
No pope has chosen that name. There is no prohibition to a pope using Matthew.
Pope St. Martin is a saint but not a patron saint.
Pope Matthew I of Alexandria was born in 1378.
Pope Matthew I of Alexandria died in 1408.
Saint Patrick was never a pope.
Pope St. Nicholas I is not a patron saint.
Yes, Saint Peter was the pope at the time.
Pope Saint Sixtus I - April 6 Pope Saint Sixtus II - August 7 Pope Saint Sixtus III - March 28
No, Pope Saint Peter was the first pope.
There was a Pope Leo XIII but he has not been canonized as a saint.
He would have been appointed to the position by the pope. In the case of Saint Nicholas, that was probably Pope Saint Sylvester I.