Crimthann Mór, son of
Fidach , also written
Crimthand Mór, was a semi-mythological king of
Munster and
High King of Ireland of the 4th century. He gained territory in
Britain and
Gaul, but died poisoned by his sister
Mongfind. It is possible that he was also recognised as king of
Scotland or
Alba. As his
Gaelic name means fox, Crimthand Mór mac Fidaig becomes
Great Fox, son of Woodsman (Fidach) in English. This Crimthann is to be distinguished from two previous High Kings of Ireland of the
same name, two
Kings of Leinster, and another King of Munster, among others. Importantly, he is included in the
Baile Chuinn Chétchathaig (summary), and is thus the last High King of Ireland from Munster until
Brian Bóruma, over six hundred years later.