I have a problem which is making searching for this family very hard. Everytime I put Carscaden in the search it gives me Christian as the surname. Originally I thought this was because I had got all the hits I was going to get, though must admit that a whole family of 12 without any references after 1861 is strange. I found deaths of 3 children through Yorkshire BMD and now have found them in the trade directories in Ancestry next to other relatives. Someone very kindly found them as Cass in Sheffield in 1871 but after that there seems to be nothing except possibly a son back in Leeds and the mother dying in Hertfordshire in 1907. I can't get her in the 1901 census. Has anyone got a non ancestry search that can search for them? Meanwhile I am going back to searching Yorkshire BMD to see if I can find anymore clues.