Margaret O'Neill Peerage person ID=546551 (1580–1655) Parents Aedh O'Neill Siobhan O'Donnell Children Sir Alexander MacDonnell, 1st Bt. Siblings Hugh Oge O'Neill Shane O'Neill Niall O'Neill Sarah O'Neill Hugh O'Neill, 4th Baron of Dungannon Partners Sir James Mac Sorley Mac Donnell Cormac MacBaron O'Neill