Background
Upton was the eldest son of Clotworthy Upton, 1st Baron Templetown, Clerk Comptroller to Augusta, Dowager Princess of Wales, by Elizabeth Boughton, daughter of Shuckburgh Boughton.
Upton was the eldest son of Clotworthy Upton, 1st Baron Templetown, Clerk Comptroller to Augusta, Dowager Princess of Wales, by Elizabeth Boughton, daughter of Shuckburgh Boughton.
He succeeded his father in the barony in April 1785, aged 13. This was an Irish peerage and entitled him to a seat in the Irish House of Lords after his 21st birthday in 1792. However, he was still able to stand for election to the British House of Commons and in 1802 he was returned to Parliament as one of two representatives for Bury Street Edmunds.
In 1806 he was created Viscount Templetown, in the County of Antrim, in the Irish peerage.
He continued to represent Bury Street Edmunds in Parliament until 1812. Lord Templetown married Lady Mary Montagu, daughter of John Montagu, 5th Earl of Sandwich.
She died in October 1824. Templetown survived her by over 20 years and died in September 1846, aged 74.