Antipope John XXIII

Italian bishop; Pisan antipope (1410–1415)

  • Fame55.2
  • Momentum0.0
  • Wikipedia15.5K
Source-basedStable
Lived 1370–1419, aged 49Italy
  • Wikipedia
    49 languages
    Cross-language footprint
  • Era
    1370–1419
    Aged 49
Summary
Updated 2026-06-08

He held the papacy for five years, called the council that would depose him, and spent centuries listed as a legitimate pope — until another John XXIII took the name in 1958 and rewrote the record.

Biography

About

Baldassarre Cossa was born in the Kingdom of Naples and served as papal legate in Romagna in 1403. He participated in the Council of Pisa in 1408, which tried to end the Western Schism by electing a third pope, and in 1410 he succeeded Antipope Alexander V as John XXIII. At the urging of King Sigismund of Germany, he called the Council of Constance in 1413 — the same council that deposed him and Benedict XIII, accepted Gregory XII's resignation, and elected Martin V, closing the schism. He was tried for various crimes, though the charges were later disputed. Before his death in November 1419,…

Where to find them

Platforms

No platforms connected yet.

By the numbers

Score breakdown

The six component signals behind the Fame score, and their ranks across the leaderboards.

Fame
Stable
55.2
Composite of search demand, mentions, audience & graph footprint.
Score components
Historical22.8
Source confidence60.0
Completeness70.0
Global rank
Country rank
Category rank
Receipts

Sources

  • Wikidata
    wikidata · wikidata.org
    High confidence
  • Wikipedia
    wikipedia · en.wikipedia.org
    High confidence
  • Pantheon 2.0
    database · pantheon.world
    High confidence