Catellus

{{Short description|Legendary king of the Britons}}

{{For|the Christian saint with this name|Catellus of Castellammare}}

{{More citations needed|date=December 2023}}

Catellus ({{Langx|cy|Kadell map Geraint}}) was a legendary king of the Britons, as recounted in Geoffrey of Monmouth's work Historia Regum Britanniae. He came to power in 269{{nbsp}}BC.[http://www.monarchie-noblesse.net/angleterre/bretons/bretons.htm Monarchie Nobelesse website, Bretons]

According to Geoffrey, he was the son of King Gerennus and was succeeded by his son, Millus. In some versions of the Brut y Brenhinedd, a series of Welsh versions of Geoffrey's Historia, Catellus is succeeded by his son Coel, who is then succeeded by his own son Porrex II.{{Cite book |last=(of) Monmouth |first=Geoffrey |title=History of the Kings of Britain |publisher=Medieval Latin Series |year=1999 |location=Cambridge, Ontario |pages=51 |language=en}}[https://www.library.wales/fileadmin/docs_gwefan/new_structure/discover/digital_exhibitions/printed_material/welsh_classical_dictionary/09_OPR.pdf National Library of Wales, Welsh Classical Dictionary, page 621]

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| before = Gerennus

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| title = King of Britain

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| after = Millus

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