Marc Isambard Brunel

Sir Marc Isambard Brunel, FRS FRSE (25 April 1769 – 12 December 1849) was a French-born engineer who settled in England. He preferred the name Isambard, but is generally known to history as Marc to avoid confusion with his more famous son Isambard Kingdom Brunel. His most famous achievement was the construction of the Thames Tunnel.