Margaret Magennis, Viscountess Iveagh (/ˈaɪveɪ/ EYE-vay; née Burke; 1673–1744), also known as Margaret Butler, was the mother of John Butler, the de jure...

Thomas Butler of Garryricken; Margaret Magennis, Viscountess Iveagh (1673–1744), widow of Bryan, 5th Viscount Magennis and Thomas Butler; Walter Butler...

Clanricarde. She was the mother of Ulick Burke, 1st Viscount Galway, Margaret, Viscountess Iveagh, and Honora Sarsfield. Helen was probably born in the early 1640s...