Hello Dave,
I did a quick look in my Eastman files but did not turn up an Orran Eastman - yet. His being married in Genesee/ Wyoming County, New York and then settling in Jennings County, Indiana means he was probably related to my Eastman line somehow, because my line came from Wyoming Co, NY to Jennings Co, IN. in 1838-1840.
Let me do some more digging in other areas to see if I can come up with anything for you.
Good Luck,
Judy Mills Boie