Happy to hear that you found something on one of your relatives!
Personally I have nothing further on this surname, but check back more things could come my way in the future to post here.
I would take a look at the Jefferson Iowa web site, we have been working hard to put as much information there as possible to help everybody. Take a look I think you will be impressed how much is there, what I posted here is just an indication of what you find at the site.
And I would subscribe to the site, it's free! The people are kind and always willing to help if they can, don't miss the opportunity to find out more on your family. Join!