Proper noun
Fortriu
A former kingdom in Scotland situated around Moray and Easter Ross, which existed from the 4th to 10th centuries.
By the 9th century, the Gaels of Dál Riata (Dalriada) were subject to the kings of Fortriu of the family of Constantín mac Fergusa (Constantine son of Fergus). Source: Internet
Kenneth's rise can be placed in the context of the recent end of the previous dynasty, which had dominated Fortriu for two or four generations. Source: Internet
The Kingdom of the Picts (based in Fortriu by the 6th century) was the state that eventually became known as "Alba" or "Scotland". Source: Internet