Noviomagus, also known as Noviomagus Cantiacorum (Latin for "Noviomagus of the Kentish") to distinguish it from other places with that name, was a Roman settlement in southeastern Britain. It was just southeast of the Thames ford near Westminster on the British Watling Street and the Thames bridge at Londinium along the Roman route.
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Noviomagus Cantiacorum Wikipedia(Text) CC BY-SA