The first Duke outlived his two elder sons and was succeeded by his second but eldest surviving son from his second marriage, the second Duke. He died from fever at an early age. On his death the titles passed to his younger brother, the third Duke. He is remembered as the father of British inland navigation and commissioned the Bridgewater Canal, said to be the first true canal in Britain and the modern world. Bridgewater never married and on his death in 1803 the marquessate and dukedom became extinct.