According to The Boyhood Deeds of Fionn, he would burn Tara to the ground every year at Samhain with his fiery breath after lulling all the inhabitants to sleep with his music.
Subsequent episodes depict his service to the king of Bantry, his recovery of Cumhal's treasures by slaying Liath Luachra (a different character than his caretaker), and his meeting with the aged and dispossessed Fianna who had fought with his father.
Mr. Deeds Goes to Town | Mr. Deeds | Fionn mac Cumhaill | The Boyhood Deeds of Fionn | Lincoln Boyhood National Memorial | Creigh Deeds | The Adventures & Brave Deeds Of The Ship's Cat On The Spanish Maine: Together With The Most Lamentable Losse Of The Alcestis & Triumphant Firing Of The Port Of Chagres | ''Mato-Tope, Adorned with the insignia of his warlike deeds.'': aquatint by Karl Bodmer | Fionn Carr | Dirty Deeds Done Dirt Cheap (song) | Dirty Deeds Done Dirt Cheap (album) | Dirty Deeds Done Dirt Cheap |