I found interesting Ruark records at the site for the Bureau of Land Management Records. They can be searched for all states by surname or by individual records if first name is known and state is known.
Matthias Ruk Crawford County, Ohio April 18, 1837 Bucyrus, Crawford County, Ohio Land Patent
Henry Rewark-- Warren County, Illinois June 1, 1818 - Script Warrent Act of 1812
There were other variations of Ruark, and also just Ruark. So if you have an idea that ancestors had land in any states under the BLM - would be good to check it out.
For some you can actually see the signature on the original - not all patents have originals yet photographed. But I saw the original of my Edgar W. McColl family in Spokane, Washington - how about that! What a beautiful signature!