 John Mág Tighearnán (died 1657)

John Mág Tighearnán, the Second (anglicised John McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan including the period 1641 to 1657.After the Ulster Plantation, The McKiernan castle at Croaghan, now in the townland of Coolnashinny, had been granted to Sir James Craig and John then lived in the townland of Anaigh.