Sarah Thompson, Countess Rumford

Sarah Thompson, Countess Rumford, (18 October 1774 – 2 December 1852) was a philanthropist. She is the first American to be known as a Countess.

Early life
Both her parents were born and brought up in the American colonies and married there in 1772.

During the American Revolutionary War of 1775 to 1783, Benjamin Thompson took the side of the British, and at the end of the war he moved to London. He was knighted in 1784.