I do not know whether this is of use or how common the name "Casper" was, but during the mid 1700 - late 1800's, there is a family of Wise's in the York/Adams County area of Pennsylvania which began with a "Casper" and the name repeats each generation that I observed. They were of German descent and were probably Catholic. If this is worth investigating, let me know and I will look for that material. Kevin D. Wise