Thanks for clarifying the source of your Chancery Suit.
I have found the baptisms of Johann George Kirschner's children including Casper, they are at Zion Church (Windsor Castle) just north of Reading in Berks Co., PA. I will provide details to your e-mail address because of the length of what I need to send you.(facts, sources, details).
I can also provide the ancestry of Johann George back to about 1600 in Germany if you want it and don't already have it.You can contact me whenever you are ready for it.
Enjoy your winter vacation. Hope you are further south than I am (in Charlotte, NC).We've had an unusually cold and snowy January-February.Bill