Fionn mac Cumhaill

Fionn mac Cumhail, also transliterated as Finn mac Cumhail and Finn MacCool, is a legendary warrior of Irish mythology. The basis for most stories about him come from the Fenian cycle, supposedly narrated by the bard Ossian. Acccording to legend, Fionn was a famous leader of the Fianna warrior/hunters, after whom the Fenian Brotherhood named themselves.

Fionn or Finn is actually a nickname meaning "fair."

Legend

Fionn was the son of Cumhail, leader of the Fianna, and Muirne. When he was just a baby, due to family enmities his mother chose to send him into hiding in the woods, in the care of two women: Bodhmall, a Druid, and Liath Luachra, a warrior and trainer. In the care of these two women he was given an extensive education in the subjects considered important for an Irish youth of his caste and time. When old enough, he returned to society, and passed the extraordinary tests required for membership in the Fianna.

Other legendary exploits include his capture and eating of the Salmon of Knowledge; the rescue of a Sidhe woman whom he later married; et cetera.