Pope Leo XI
Pope of the Catholic Church in April 1605 (1535-1605)
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Updated 2026-05-29
Pope Leo XI held the top job at the Catholic Church for 27 days—one of history's shortest papal runs. The Florentine Medici cardinal barely warmed the throne before dying in 1605.
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Pope Leo XI, born Alessandro di Ottaviano de' Medici, was head of the Catholic Church and ruler of the Papal States from 1 April 1605 to his death, on 27 April 1605. His pontificate is one of the briefest in history, lasting under a month. He was from the prominent House of Medici originating from Florence.
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Stable10.1
Composite of search demand, mentions, audience & graph footprint.
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Momentum1.5
Historical19.9
Source confidence60.0
Completeness60.0
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- WikidataHigh confidencewikidata · wikidata.org
- WikipediaHigh confidencewikipedia · en.wikipedia.org
- Pantheon 2.0High confidencedatabase · pantheon.world
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