I'm tracing the Croziers for my wife, they are on the maternal side of her mother's family. It is the female line in which I have a particular interest. I found a reference to a marriage between a Matthew Crozier and an Elizabeth Saderson for 6/8/1809 in the IGI. The marriage took place in Bishopwearmouth. So far no way of proving they are the same parents as in the 1841 census.
Thank you for your interest and help.
Reg.