Shafer Looking for Ancestors of Washington Shafer

Looking for the Ancestors of
Washington Shafer (ca 1825)& Pertina Bingham.

Decendants:
Martha E. Shafer & Ira F. Gifford.
Jennie G. Gifford & Samuel C. Lake
Bernice A. Lake & George D. Hitchcock
Dorothy A. Hitchcock & Ernest O. Brunson - My Parents
Ernest R. Brunson - me

Thanks for any help.
Regards,
Erney