The Six Multiple Use Names That Were Never Assumed

In my first batch of papal statistics I said that there were six shared (i.e. multiple use) elemental papal names that were never assumed by other popes. That means that these six names always occurred as birth names or possibly priestly names (i.e., a name assumed when ordained as priest or monk).

These six names are: Felix, Agapetus, Marcellus, Marinus, Pelagius and Theodore.

There were three popes named Felix, viz. I (269-274), III (483-492) and IV (526-530). [Felix II, 355-365, was an antipope.]

In the case of the other five names, there have only been two popes, each, with those names.

Marcellus II, 9 April 1555 to 1 May 1555, happens to be the last pope, to date, to have retained his prior name.

With the exception of Marcellus II, all the other popes with these six names were from the 1st millennium.