I am a direct descendent of Francis Kassing
and I have been doing a little amateur work
on the family off and on for a couple of
years. The only thing I can tell you is that
family lore and Census Records agree, it was
Germany ("Hanover" in the census). I believe
that the first Kassing entered the US in 1838
and settled in Morehouseville, Hamilton County.
I would be interested to learn about your
connection to the Kasing family.
and can tell you more when I get back to my
home in Virginia.