... was the Pope whose personal failings, including an irascible inclination to torture and execute his Cardinals, led to the Great Western Schism.
There were very serious grounds for suspecting that his election, in 1378, was invalid on account of duress; the Cardinal Electors were under the menace of being torn to pieces by the Roman mob. Indeed, the dear little 1958 CTS pamphlet listing the popes, which never leaves my desk, says simply that his election "has been generally deemed valid" ... not a very wholehearted or ringing endorsement.
A few months later, most of the Cardinals repudiated their allegiance and declared the election invalid.
Yet he is always included nowadays in the list of 'genuine' popes, and the prelate, 'Clement VII', whom the Cardinals then elected in his place, is relegated to the list of 'antipopes'.
It was not until 1429, when 'Clement VIII' abdicated, that Christendom at last had only one claimant to the See of Peter.
Half a century of Schism.
Why am I reminding you of this?
Because, in our present crisis, glib people talk easily about getting rid of flawed popes. Urban VI was, surely, in the half-dozen most flawed popes ever, but securing the consent and collaboration to get rid of him was found to be difficult ... nay rather, in view of the fact that he never was successfully disposed of, one might say 'impossible'.
And, during that half-century, there never was an undisputed pope. Indeed, from 1409 until 1415, there were as many as three claimants simultaneously disputing the cathedra Petri.
I feel that this demonstrates the immense dangers of approaching ecclesial crises with simplistic 'remedies'.
Devising fictional solutions to real problems is no answer. Prayer and the bearing of witness are the Catholic remedy.