Richard Southwell Bourke Mayo, earl of, a British statesman, born in Dublin, Ireland, Feb. 21, 1822, assassinated at Port Blair, Andaman islands, Feb. 8, 1872. He graduated M. A. at Trinity college, Dublin, in 1844, made a tour through the north of Europe, and in 1845 published a narrative of his observations in St. Petersburg and Moscow. He was a member of parliament from 1847 to 1866, and chief secretary for Ireland from March to December, 1852, again from February, 1858, to June, 1859, and for the third time from July, 1866, to September, 1868, with a seat in the cabinet. On the death of his father, Aug. 12, 1867, he succeeded as sixth earl of Mayo. He was appointed governor general of India in the latter part of 1868, and arrived at Calcutta in January, 1869. His administration was distinguished by executive ability and by the introduction of many reforms. Early in 1872 he set out upon a tour of inspection of the British provinces in India, and had reached the penal settlement of Port Blair when a Mohammedan convict broke through the guards and stabbed him in the back, killing him instantly.