Thanks for you email,
My Great Grandfather was Benjamin cc1863, and his son Isaac was my Grandfather on my Fathers side. I too have found them in the census records as you mentioned also, check out this web address for marriages Wolverhampton. I have found Sarah as Baines and Banes. It has been suggested to me that Isaacs father was Barnett Fullard and Leah Porter his mother. I cant connect them, but have found their deaths, and also on IGI listed as Fullwood, Barnet and Leah as parents of Rachel cc1808 Sedgley. Isaac had a son Barnett ??? have you found anything further??