Complex sentence: John Russell Colvin (May 29,1807-September 9,1857) was lieutenant-governor of the North-West Provinces of British India during the mutiny of 1857, at the height of which he died.
Split into simpler sentences: John Russell Colvin, Esq. (May 29,1807--September 9,1857) was a British civil servant in India. He was lieutenant-governor of the North-West Provinces of British India during the mutiny of 1857, at the height of which he died.