Re: Jacob K. Berkey parents
According to the Berkey book, Jacob was born Oct 8, 1793, died 1840, and had 8 siblings.Some of the desc still live today in Bucks co, PAThere is also a reference to Kulp History book (Kulp and Kolb being the same name).
One of Jacob's sisters, Susannah married a Rev Samuel Koppes, whom I would assume is related to Mary.
This family is Berkey Line 4 in the Berkey book from 1995.
Most of the Berkey book is online, including some recent additions.
http://www.omii.org/http://www.omii.org/Go to the databases, type in an unusual name like Koppes and select a database.I prefer the Lint database but you can wander around other databases too.It is primarily a Berkey database but also has a lot of information on your Kolb family.