Jorge Maria O'Neill (Lisbon, Encarnação, 7 November 1908 – Lisbon, 15 December 1988) was the head of a branch of the Clanaboy O'Neill dynasty, which has resided in Portugal since the 18th century.
as titular Prince and Count of Clanaboy,[citation needed] but refused to use the title, preferring instead the style O'Neill of Clannaboy.
[citation needed] He was the first son of the previous head Hugo José Jorge O'Neill and wife Dona Júlia Margarida Catarina de Serpa Pimentel de Sousa Coutinho.
[citation needed] Jorge O'Neill was an Electronic Engineer graduating from the University of Lausanne, Switzerland.
[1] Jorge Maria O'Neill married in Cascais, on 23 December 1937 Josefina Luísa Roquette Ricciardi (Lisbon, Camões, 5 April 1917 – Lisbon, Alcântara, 11 April 2004), daughter of Luís Rafael Feliciano da Conceição Ricciardi[a] and wife Julieta Garin Holtreman Roquette.