Background
Hay was born in Aberdeen on 21 December 1758, the second son of John Leith (1731–1763) of Leith Hall, Aberdeenshire and his wife, Harriet (d 1780), daughter and heir of Alexander Steuart of Auchluncart.
lieutenant army officer colonel
Hay was born in Aberdeen on 21 December 1758, the second son of John Leith (1731–1763) of Leith Hall, Aberdeenshire and his wife, Harriet (d 1780), daughter and heir of Alexander Steuart of Auchluncart.
He was appointed a lieutenant in the 7th Dragoons immediately on his birth, captain 1768, and colonel in the army 1794. On 1 October in the same year he was gazetted colonel of a regiment raised by himself and called by his name. He was promoted to be major-general 1796, lieutenant-general 1803 and full general 1838.
He was deputy lieutenant and justice of the peace for the county of Aberdeenshire.
Leith died in August 1838.