don't know if I'm behind the times with your post, but was looking for family info on Nelson Sweitzer.Saw your post.found this and hope it may help...http://www.geocities.com/Heartland/Pointe/7741/bowman.html (bio on Jacob)
Have found other references linking Jacob B. as Nelson's brother..Have found father of Nelson listed as Henry from Brownsville Pa (West Point records).
Have come across a Alonzo B. Sweitzer (b.abt 1813), father Lewis Sweiter , both from Brownsville Pa..
Trying to see if he be related to Nelson.
If you have any additional info on Nelson's career prior to his death, could you let me know..