Niall Óg Ó Néill
Died: 1403
Great grandchildren: Art mac Aodha, Henry 'Og' O'Neill, King of Ulster, Donnell Claragh O'Neill, and more
Grandchildren: Aedh O'Neill and Éinrí Ó Néill
Children: Eoghan Ó Néill and Brian Óg mac Néill Óig
Partner: Una O'Neill
Parents: Beanmidhe MacMahon and Niall Mor O'Neill