High Quality Content by WIKIPEDIA articles! John Joseph Clancy (15 July 1847 – 25 November 1928), usually known as J. J. Clancy, was an Irish nationalist politician and Member of Parliament (MP) in the House of Commons for North County Dublin from 1885 to 1918. He was one of the leaders of the later Irish Home Rule movement and promoter of the Housing of the Working Classes (Ireland) Act 1908, known as the Clancy Act. Called to the Irish Bar in 1887 he became a KC (King’s Counsel) in 1906.