Quick insight on this side of the family.

Cornelius Bonapart Rice born New York to unknown parents married Jane Elizabeth Mozingo in Distict of Columbia in 1847. The earliest census is 1850, after they are married,  there is an E. Mozingo, age 50, that I figure to be Jane's mother and a S. Mozingo that we know is Jane's younger brother Samuel Gideon Mozingo. Jane, E. and Samuel are all born in Virginia. Cornelius and Jane moved to Black Jack, Kansas around 1856-57 and had thier youngest son Gideon Newton Rice in 1867 in Black Jack, Kansas. Gideon married Celia Ann Bolin/Bolen, born in Ohio thier oldest son Lee Maynard married Ada Elizabeth Foster thier oldest son Paul Lee Rice married Berniece Opal Taylor, youngest daughter of my Mixed up bunch, and they had 1 daugher who had me. If we could just figure out Cornelius and Jane's parents I would be on my way to a hole in a 40 year search by other family members. My 3rd cousins have looked so long and hard but nothing comes up except a Newton Mozingo and Elizabeth Smith but we can't find any proof and Cornelius we can't find anything on any type of parentage since he always said his parents died when he was about 3 and that would be before 1830. Any and all help would be very much appreciated as I would like to help the other family members with more than just my direct line forwards. I am lost and am hoping some one will know something that I have overlooked.