Background
He was born at Yester House, near Gifford, East Lothian, and served in British India as a member of the Bengal Civil Service and later as a Liberal Member of Parliament.
He was born at Yester House, near Gifford, East Lothian, and served in British India as a member of the Bengal Civil Service and later as a Liberal Member of Parliament.
As a younger son, Hay was educated at the Imperial Service College and then served in the Bengal Civil Service from 1845 to 1862, including some years as Deputy Commissioner of Simla and then as Superintendent of the Hill States of Northern India. He also became Chairman of the North British Railway Company. In 1881 he was created Baron Tweeddale of Yester in the peerage of the United Kingdom, giving him a seat in the House of Lords.
On 26 October 1898 Tweeddale was appointed a Knight of the Thistle and was invested at Windsor Castle on 8 December. He was also a Deputy Lieutenant for the counties of Haddingtonshire (now called East Lothian and Berwickshire) and a Brigadier-General of the Royal Company of Archers, a ceremonial unit that serves as the Sovereign"s Bodyguard in Scotland.
Following his permanent return from India Hay was Liberal Member of Parliament for Taunton from 1865 to 1868, and was elected again for Haddington Burghs in 1878.