John Ericsson (born Johan Ericsson; July 31, 1803 – March 8, 1889) was a Swedish-American engineer and inventor. He was active in England and the United States. Ericsson collaborated on the design of the railroad steam locomotive Novelty, which competed in the Rainhill Trials on the Liverpool and Manchester Railway, which were won by inventor George Stephenson's (1781–1848), Rocket. Later in North America, he designed the United States Navy's first screw-propelled steam-frigate USS Princeton, in partnership with Captain (later Commodore) Robert F. Stockton (1795–1866) of the U.S.
https://en.wikipedia.org/wiki/John_Ericsson