George Speirs Alexander Ranking, Dictionary of National Biography… (1912)
“ PLATTS, JOHN THOMPSON (1830–1904) , Persian scholar, born at Calcutta on 1 August 1830, was second son of Robert Platts of Calcutta, India, who left at his death a large family and a widow in straitened circumstances. John, after being educated at Bedford (apparently privately) , returned to India in early manhood, and during 1858-9 was mathematical master at Benares College. He was in charge of Saugor School in the Central Provinces from 1859 to 1861, when he became mathematical professor and headmaster of Benares College. ”
