Elizabeth Plunkett, Lady Killeen

Elizabeth FitzGerald (before 1597–1611) was the first wife of Lucas Plunket, who succeeded as Baron Killeen in 1613, and who in due course became the 1st Earl of Fingall in 1628. They lived at Killeen Castle, County Meath in Ireland. She was a daughter of Henry FitzGerald, 12th Earl of Kildare, and therefore sister to Bridget, the Countess of Tyrconnell and wife of Prince Rory O'Donnell, 1st Earl of Tyrconnell. Errors in her genealogy Much confusion about her identity prevailed in erroneous genealogies during the 19th and early 20th centuries. She was believed to be the daughter of Rory O'Donnell, 1st Earl of Tyrconnell, and Lady Bridget FitzGerald. Understood in the same way to have been Elizabeth O'Donnell, she was reported to have married Luke Plunket, 1st Earl of Fingall. Her lineage as a daughter (possibly pre-marital) of Rory O'Donnell, 1st Earl of Tyrconnell, and his wife Lady Bridget FitzGerald, was repeatedly cited in various peerage directories, such as Lodge's (1827, and re-issued in 1907), Foster's (1881), Cokayne's (1926), and Burke's (1980).