Who was Finn mccool?

Finn McCool, or Fionn mac Cumhaill, is a legendary hero in Irish mythology, renowned for his wisdom, strength, and leadership of the Fianna, a band of warriors. He is often associated with various myths, including the story of the Salmon of Knowledge, which bestows wisdom upon those who consume it. Finn is also a central figure in tales of battles against giants and other supernatural beings, particularly in the context of the Giant's Causeway in Northern Ireland, which is said to have been built by him. His character embodies the ideals of bravery and intelligence in Celtic folklore.