Powys was elected to the House of Commons for Northamptonshire in 1774, a seat he held until 1797.
[2] The family seat was Lilford Hall, first acquired by his great-grandfather, the judge, Thomas Powys.
In 1770 he sold Henley Hall to Ralph Knight, who reconstructed the house.
Lord Lilford died in January 1800, aged 56, and was succeeded in the barony by his eldest son Thomas Powys.
This biography of a baron or baroness in the Peerage of Great Britain (1707–1800) is a stub.