According to Carson, Derby Terrace and Street are both linked with Edward Geoffrey (1799 -1869), the 14th Earl of Derby. He was Chief Secretary for Ireland from 29 November 1830 – 29 March 1833. He was Prime Minister for a short time (28 June 1866 – 25 February 1868) before being suceeeded by Benjamin Disraeli. “They have… named two streets off Falls Road Dunlewey Street and Derby Street”. The minutes of the Town Improvement Committee of 1 December 1879".