José Carlos O'Neill (1 August 1815, inLisbon, Encarnação (registered 1825) – 21 June 1887, in Lisbon, Encarnação), was the titular head of the Clanaboy O'Neill dynasty, whose family has been inPortugal since the 18th century.
He was the first-born son of the previous headJosé Maria O'Neill and wife Ludovina de Jesus Alves Solano.
He was atrader and the Main Manager of theCasa Comercial Torlades, who also received in his house in his Farm (Quinta) of as Machadas, at the term ofSetúbal,KingsPedro V of Portugal andLuís I of Portugal.[1]
He died unmarried and without issue. He was succeeded by his second brotherJorge Torlades O'Neill I.