The first few generations of Hart(e)s were from Penn, with Wolverhampton becoming the hometown after Thomas Hart (1741) & Sarah Fearney settled there after their marriage in 1769.
The Midlands developed dramatically during the 17th and 18th centuries as industries flourished. Coal mining and the iron and steel industry were followed by industries such as lock and key making and cycle manufacturing, both particularly important in Wolverhampton.
The photo shows the city centre of Wolverhampton, looking down Darlington Street, at the bottom of which William Edward Hart (1840) established the Hart Cycle Company at No.38 .. now a car park.

Other family branches also seem to have had their origins in Staffordshire, with Bridget Lees, Edward Parkes (a file maker) and Elizabeth Lloyd all being born in Wolverhampton, though John Bevan (an engineer) was born in Wombridge, Shropshire.
Edmund Hadley was recorded as deceased on Elizabeth Hadley's birth certificate (1845), but no 1841 census entry can be found for him. He was a puddler (iron worker), not apparently a particularly safe occupation, so may have died as a result of a work related accident.