In 1836 Lord Auckland was appointed of
Governor-General of India. His private secretary was
John Russell Colvin, who rose to be lieutenant-governor of the North-West Provinces and named his son
Auckland Colvin after him. As a legislator, he dedicated himself especially to the improvement of native schools and the expansion of the commercial industry of India. But complications in
Afghanistan interrupted this work in 1838. Lord Auckland decided on war, and on 1 October 1838 in
Simla published the
Simla Manifesto, dethroning
Dost Mahommed Khan. After successful early operations he was created
Baron Eden, of Norwood in the County of Surrey, and
Earl of Auckland. However the
Afghan campaign ultimately ended in disaster. He handed over the governor-generalship to
Lord Ellenborough and returned to England the following year. ==Political career, 1842–1849==