title: John Mág Tighearnán
text: # John Mág Tighearnán
  
  John Mág Tighearnán, the First, (anglicised John McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1499.
  
  ## Chieftainship
  
  On the death of the previous chief, John took the chieftaincy and resided in the castle of Croaghan of the Cups (Irish- Cruachan O'Cúbhrán), now in the townland of Coolnashinny, beside the later town of Killeshandra.
  
  In 1495 a relative died. The Annals of Ulster for 1495 state-
  
  Mag Tighernain ‘Ichtarach’, namely, Gormgal, son of Brian Mag Tigernain, died
  
  ## Death
  
  John died in 1499. The Annals of Ulster for 1499 state-
  
  Mag Tighernain of Tellach-Dunchadha, namely, John Mag Tighernain, died this year.
  
  