Hi there :). Don't know if this helps much but I thought I'd share anyway...
There is a death certificate for
Amos Marshall but this would be the son you're talking about, and not the father.
Amos Marshall
b. 18 Jul 1861 in
Buffalo NY
d. 7 Sep 1949 in Stoutland
Wife: Ellen Jane Marshall
Father:
Amos Marshall
Buried: Stoutland Cemetery
Ellen Jane is also buried in Stoutland Cemetery. She was born in 1872.
There is an
Amos Marshall buried at Center Cemetery.
If you're looking for birth information about the elder
Amos maybe you could try pilot.familysearch.org and check for records on that name in NY, since that's where he was born?
Hope that helps!
Samantha