[2] He was returned to the Parliament of the United Kingdom as one of two representatives for County Dublin in 1807, a seat he held until 1830.

This was an Irish peerage and did not entitle him to an automatic seat in the House of Lords.

[4] Three years later he was raised to the Peerage of the United Kingdom as Baron Furnival, of Malahide in the County of Dublin,[5] which gave him a seat in the House of Lords.

He had no surviving male issue and the barony of Furnival died with him.

He was succeeded in the Irish barony by his younger brother, James.