I am helping a Letson descendant with his family history.

I need to clear up Calvin Letson parents. I have Clarinda (Whipple) and Mathew Randall Letson. Some other people say it is Mathew Randall Letson and Martha/Marantha Luramay Wilson.
I am looking for source information anyone might have to prove Calvin Letson's mother as either Clarinda or Marantha/Martha.

I also still need to clear up Calvin W. Letson marriages. I have him marrying Celestia Bovee first and Orpha Bovee 2nd.

Thank you