Seisyllwg

Rarity: Common

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At a glance

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Place

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History and politics

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What Wikipedia says

Seisyllwg (Welsh: [sɛiˈsəɬʊɡ]) was a petty kingdom of medieval Wales. It is unclear when it emerged as a distinct unit, but according to later sources it consisted of the former Kingdom of Ceredigion plus the region known as Ystrad Tywi.

Excerpt from the Wikipedia article “Seisyllwg”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: AlexD, CC BY-SA 3.0, via Wikimedia Commons.