Kate, I am glad to see you are asking about a member of the 35th Georgia. I presume you are a relative? Gary Smith's post contains as much info as I dug up on all three Patterson's in Company C. A complete, detailed history of the 35th Georgians from 1861-1865 comprises my book "Red Clay to Richmond: Trail of the 35th Georgia." There is info available if you go to the home page for this website and click on Our Authors.
John Fox