Brittonum
Brittonum is a term that has been used historically to refer to the island of Great Britain. Its origins are debated, but it is believed to be derived from a Celtic word, possibly related to the Brythonic languages spoken by the native inhabitants of the island. The term appears in various ancient and medieval texts, often in Latinized forms.
The usage of Brittonum can be found in geographical and historical accounts from Roman times onwards. It