I. Ste ‧ phen ‧ son, George /ˈstiːv ə ns ə n/ BrE AmE
(1781–1848) a British engineer who is generally considered to have developed the first steam-powered railway engine. He also built the first public railway to carry passengers in 1825 (the Stockton and Darlington Railway in northern England), and he is known especially for his steam train The Rocket .
II. Stephenson, Rob ‧ ert /ˈrɒbət $ ˈrɑːbərt/ BrE AmE
(1803–59) a British engineer, the son of George Stephenson. He continued his father's work on the development of the steam train, and is also known for building bridges, including the railway bridge over the ↑ Menai Straits in North Wales.