I actually found a link on facebook that has a lot of information including some photos, etc. of Sponenbergs in Montour County, PA area. I think there is a photo of a bible with the name Hannah on printed on it.
In the "Search" section on facebook, I type in Sponenberg and scroll down to the bottom of the page.There you will find someone who has done much research.I have spent hours sifting through this stuff. My great grand-father is Edward Sponenberg.My grandfather is Griffin Sponenberg.
I would love to hear about anything that you have found.