Indulf

Ildulb mac Causantín, anglicised as Indulf or Indulph, nicknamed An Ionsaighthigh, "the Aggressor" (c. 927 – 962) was king of Alba from 954 to 962. He was the son of Constantine II; his mother may have been a daughter of Earl Eadulf I of Bernicia, who was an exile in Scotland.

Source: Wikipedia — https://en.wikipedia.org/wiki/Indulf