Has there ever been a Papal abdication that was voluntary?
lots, didn’t you read the ones above about resignations?
“... Papal abdication that was voluntary?”
I found five resignations: Gregory XII (1406-1415), St. Celestine V (1294-1294), Benedict IX (1032-1044), St. Pontian (230-235 A.D.) and a possible /conjectured St. Clement (88-97 A.D.). The only Pope that resigned without political pressures/other issues at hand was St. Celestine V. So... sounds like one before. (I had to do some research. My 12 years of Catholic School didn’t quite prepare me for this!)
Clement V. He tried to refuse election, was a hermit who liked it that way but was forced to accept the pontificate. Once he was elected he pretty much said I'm the boss and the boss says it's ok for the boss to retire and since I'm the boss you can't do anything about it. He retired and returned to his hermitage.