Sentence 1: About 1838 , Stephenson returned to Manchester and established himself as an historical and landscape engraver in St. Ann Street , and then in a studio in Ridgefield .
Sentence 2: In 1838 , Stephenson returned to Manchester and established himself as a historical and landscape engraver in St. Ann Street and then at a studio in Ridgefield .

Do these two sentences convey the same information?
yes