unknown Magennis Peerage person ID=546248 (b. 1600) Parents Hugh Magennis, 2nd Viscount Magennis of Iveagh Children Griobha O'Neill Siblings Arthur Magennis, 3rd Viscount Magennis Hugh Magennis, 4th Viscount Magennis of Iveagh Partners Felim O'Neill of Kinard