Joan Maguire (died 1600) (d. 1600) Parents Constantine 'Coarb' Maguire Children Hugh O'Neill, Earl of Tyrone Brian O'Neill, Baron Dungannon Cormac MacBaron O'Neill Sir Turlough O'Neill, Lord of the Fews Partners Owen Mactoole O'Gallagher Henry O'Neill, Lord of the Fews Matthew O'Neill, 1st Baron Dungannon