Rhugga

Rhugga (1176-1231) was the sixth King of Rhudaur.Not being of pure Dúnadan, but of mixed-Hillman descend he was considered an ursurper by the Dúnadan Nobility and was never acklowledged as rightful King hy the Rulers of Arthedain and Cardolan.He nerverthless proved longlived and ruled successful for 55 years.

Notes:
Other than most Hillman-names, Rhugga is not based on gaelic or welsh and thus seems to represent an untranslated name.