Joubert, Petrus Jacobus. Born in 1831. One of the triumvirate who organized a Transvaal revolt against the British Government in 1880. Joubert held the chief command in the engagements at Laing's Nek, Ingogo River, and Majuba Hill. In 1899, was commander-in-chief of the Boer forces in the war with England. Died 1900.