Ruler · 795 – 844

Pope Gregory IV

Lived 795 – 844; writer. Pope of Papal States, 827 – 844.

Wikidata's English label: Gregory IV.

For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the reign.

Lived: 795 – 844; 49 years
In office: 17 years; one reign
Lines: 1; Papal States
Left it: died in office; read off the dates alone

Pope

Papal States · the 9th of 163 dated reigns · 757 – 1878 · read from the line of Vatican City

5 before

Paschal I817 – 824

Eugene II824 – 827

Valentine827

Pope Gregory IV827 – 844

Sergius II844 – 847

Leo IV847 – 855

Benedict III855 – 858

151 after

killed, executed or dead in battledied in officeleft alive by a regular roadending not on recorda second row: a reign that began before the last had ended — rival claimants, or a shared thronethis entry

Reigned 827 – 844 · 17 years · came to it aged 32

Left it: died in officeread off the dates alone: the term ends in 844, the year they died

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Wikidata Q167052 (CC0) · the reigns from Wikidata's P39 terms, the rulers' own articles read by grammar (sentences quoted above, CC BY-SA 4.0) and Kokkonen & Sundell where they code the line · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.