
1) British traditional history 2) Welsh mythology
Found on
https://www.crosswordclues.com/clue/albanactus

Albanactus, according to Geoffrey of Monmouth, was the founding king of Albania or Albany. He is in effect Geoffrey`s eponym for Scotland. His territory was that north of the River Humber. This myth was then taken up by Giraldus Cambrensis. ==Legendary history in Geoffrey of Monmouth== Albanactus was stated to be the youngest of three sons of Bru....
Found on
http://en.wikipedia.org/wiki/Albanactus
No exact match found.