Presently, Dumnonia (m+ n) is spelled Dummonia (m + M0 on this profile. 1. https://dumnonia.uk/ 2. https://www.oxfordreference.com/view/10.1093/oi/authority.201108101... 3. https://www.historyfiles.co.uk/KingListsBritain/BritainDumnonia.htm 4. https://en.wikipedia.org/wiki/List_of_kings_of_Dumnonia
Does it look better now?