It's a regnal name.
For comparison, King George VI of Britain (the one from The King's Speech) was baptized Albert, but took the name George, after his father, when he was crowned.
The past two hundred or so Popes have taken regnal names, in order to honor someone they admired.
Anytime God wanted someone to go announce his plans to all the world, most of the time He changes their names ...
Abram --> Abraham
Simon --> Peter
Saul --> Paul
BTW, my confirmation name is Peter,
posted on 03/13/2013 12:46:38 PM PDT
by Rocky Mountain Wild Turkey
("I have an open mind ... just not so open that my brain falls out onto the floor!!")
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