Career
He was the second surviving of John Hay of Haystoun, sheriff-depute of Peebles.
He was the second surviving of John Hay of Haystoun, sheriff-depute of Peebles.
12th Parliament of Great Britain. 14th Parliament of Great Britain]
He was the Member of Parliament (Member of Parliament) for Peeblesshire from 1767 to 1768, and from June 1755 until his death in November that year.