St. Catherine of Siena and St. Vincent Ferrer, for example, disagreed about who the valid Pope was during the Great Western Schism.

Are there famous theologians or even saints who lived during the Great Western Schism and who considered none of the papal claimants valid popes?

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    Not that I can think of. I don't think anyone at the time ever doubted that one of the claimants actually was the Pope. (Obviously, the cardinals who elected Clement VII—the rival of Urban VI—considered Pope Urban to be deposed, and hence the See of Rome to be vacant, but they thought they were filling the vacancy.) Nov 9, 2015 at 7:00
  • @AthanasiusOfAlex Yes, that's a good point. They were essentially what we'd today call conclavists (a type of sedevacantists).
    – Geremia
    Nov 10, 2015 at 4:41

1 Answer 1


According to William Morgan in "The Great Schism of the West and the Catholic Church Today," St. Vincent Ferrer did not recognize any of the claimants towards the end of the schism (source):

Disaster struck for Papa de Luna when his most important supporter, St Vincent Ferrer, decided that he was pertinaciously dividing the Church, and so was a schismatic and no longer Pope. The miracle working Dominican saint never recognised the Urbanist claimants. Rather was he now a sedevacantist, looking to the General Council to resolve the Schism.

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