Here's a list of my Kopp's from Adams and York Counties, PA.:
John (b.1850, died 1922 and buried in Spring Grove cemetary)
John and his wife Lucy Ann had two sons that I know of: James P. and Charles Franklin (b. 1871).
James P. was married to Sarah C. Meyers.
Charles Franklin Kopp and his wife Susan Senft had 4 children:
Edward (b. 1895), Curvin (b. 1897), Vera (b. 1903) and Lulu (b. 1911).
If you have any information that would help me, or would like some more detailed info. on any of these people, please e-mail firstname.lastname@example.org