He was the son of Christian Friedrich Rost, a Lutheran minister, and his wife Eleonore Glasewald, born at EisenberginSaxen-Altenburg on 2 February 1822. He was educated at the Eisenberg gymnasium school, and, after studying under Johann Gustav Stickel and Johann Gildemeister, graduated Ph.D. at the University of Jena in 1847. In the same year he came to England, to act as a teacher in German at the King's School, Canterbury. After four years, on 7 February 1851, he was appointed oriental lecturer at St. Augustine's Missionary College, Canterbury, founded to educate young men for mission work. This post he held for the rest of his life.[1]
In London, Rost met Sir Henry Creswicke Rawlinson, and was elected, in December 1863, secretary to the Royal Asiatic Society, a post he held for six years. Through Rawlinson he became on 1 July 1869 librarian at the India Office, on the retirement of FitzEdward Hall, and imposed order on its manuscripts. He secured for students free admission to the library. He retired in 1893 after 24 years of service at the age of 70.[1] His successor as head librarian of the India Office Library became the Orientalist and SanskritistCharles Henry Tawney (1837–1922).
Rost gained many distinctions and awards. He was created Hon. LL.D. of Edinburgh in 1877, and a Companion of the Indian Empire in 1888. He died at Canterbury on 7 February 1896.[1]
Rost maintained a close friendship with Filipino novelist José Rizal, who visited London in 1888.[2]
Oskar Weise: Der Orientalist Dr. Reinhold Rost, sein Leben, und sein Streben. Leipzig: Teubner 1897. 71 p. (Mitteilungen des Geschichts- und Altertumsforschenden Vereins zu Eisenberg).