My ancestors on my direct paternal line at this time are scattered from eastern Pennsylvania through Indiana and Ohio. I wish I had some information about them. Surely some members of the noble Deardorff clan were in the struggle to preserve the Union. And/or to end slavery.
I wouldn't know about Deardorfs, but am near certain your Simpson ancestors were right at the top of Union leadership, beside McClellan & Halleck and all those other military geniuses!
D'oh!