National Trust: Segontium

Anglesey, United Kingdom

National Trust: Segontium

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Segontium (Old Welsh: Cair Segeint) is a Roman fort on the outskirts of Caernarfon in Gwynedd, North Wales. The fort, which survived until the end of the Roman occupation of Britain, was garrisoned by Roman auxiliaries from present-day Belgium and Germany. It was the most important military base and administrative centre in this part of Britain.

The fort probably takes its name either directly from the Afon Seiont or from a pre-existing British settlement itself named for the river. The name is a Latinised form of the Brythonic language *seg-ontio, which may be translated as "strong place".




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