Son of preceding, born at Willington Quay, was well educated at Newcastle, and for a session at Edinburgh University; began in 1823 to assist his father, and from 1824 to 1827 fulfilled an engineering engagement in Colombia, South America; rendered valuable service in the construction of the "Rocket," and as joint-engineer with his father of the London and Birmingham line, was mainly responsible for its construction; turning his attention specially to bridge-building he constructed the Britannia and Conway Tubular bridges, besides many others, including those over the Nile, St. Lawrence, &c.; was returned to the House of Commons in 1847; received the Grand Cross of the Legion of Honour from the French emperor, and many other distinctions at home and abroad; was buried in Westminster Abbey (1803-1859).