The last Duke was succeeded in the other titles by his first cousin once removed, the seventh Earl. He was the son of the Right Reverend the Hon. John Egerton, Bishop of Durham, son of the Right Reverend the Hon. Henry Egerton, Bishop of Hereford, youngest son of the third Earl. Lord Bridgewater was a General in the Army and also sat as Tory Member of Parliament for Morpeth and for Brackley. He was childless and on his death in 1823 the titles passed to his younger brother, the eighth Earl. He was known as a patron of science as well as a great eccentric. Lord Bridgewater never married and on his death in 1829 his titles became extinct.