1389 Conclave
elected Boniface IX25 October – 2 November 1389 · Conclave law and the Great Schism · Apostolic Palace, Papal States
The 1389 conclave (25 October – 2 November) was convoked after the death of Pope Urban VI. The conclave is historically unique because all of the cardinal electors were the creation of a single pontiff: Urban VI, the very pope who was being replaced.
Elected pope
Boniface IX
Pietro Tomacelli
Succeeded
Urban VI
Duration
9 days
Cardinal electors
—
locked in under conclave rules
Key officials
| Dean | Francesco Moricotti Prignani |
| Camerlengo | Marino Bulcani |
Ballot-by-ballot tallies are destroyed by design — the paper is burned in the stove whose smoke announces the result — so this entry records what the Church documents: the dates, the electors, the number of ballots where known, and the man who walked out onto the balcony.