Ruler · 800 – 844

Merfyn Frych

Lived 800 – 844. King of Gwynedd of Kingdom of Gwynedd, 825 – 844.

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

Lived: 800 – 844; 44 years
In office: 19 years; one reign
Lines: 1; Kingdom of Gwynedd
Left it: died in office; read off the dates alone

King of Gwynedd

Kingdom of Gwynedd · the 17th of 40 dated reigns · 450 – 1240

13 before

Caradog ap Meirion754 – 798

Cynan Dindaethwy798 – 816

Hywel ap Rhodri Molwynog816 – 825

Merfyn Frych825 – 844

Rhodri Mawr844 – 878

Anarawd ap Rhodri878 – 916

Idwal Foel916 – 942

20 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 825 – 844 · 19 years · came to it aged 25

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

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Merfyn Frych in the atlas: the article, every line they sat in, and the map in their years.
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Wikidata Q886414 (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.