1. Dumnonian - Noun
2. Dumnonian - Adjective
Dumnonian (comparative more Dumnonian, superlative most Dumnonian)
Of or relating to Dumnonia.
Dumnonian (plural Dumnonians)
A native or inhabitant of Dumnonia.
The Dumnonian royal line continued after this time, but it is at this date that the independence of one of the last British kingdoms may be considered to have ended. Source: Internet