The only information that I have on his marriage certificate from 25 April 1852 (in Liverpool) was that his father, also Joseph Powell, was a painter.
Now this is interesting as there was a painter called Joseph Powell who entered the US in 1830 aboard the Napoleon with an Eliza Powell. In the 1841 UK census, I can find a young Joseph Powell, aged 10, who is living with a woman called Eliza but with a different father, James. The surname of both James and Eliza is impossible to read.
So if I take the evidence I have on face value it could suggest the following possibility:
In 1830, Joseph Powell snr the painter and his wife Eliza Powell, emigrate to the US in 1830, leaving from Liverpool, to start a new life. In about 1832 a son, Joseph Powell jnr, is born in Ohio. At some stage after this Joseph snr disappears from the records - perhaps dies - and Eliza and Joseph jnr return to England, whereupon Eliza remarries. In 1841 they are listed on the UK census in Liverpool, although they are missing from the 1851 census. In 1852 Joseph jnr marries, noting his father as a painter.
For this theory to work I need to place Joseph's birth in the US somewhere and the most likely is in Ohio, as indicated on the 1861 UK census. Hence my desire to decipher the place name...
Does this all make sense?