There was a George A. Bernhard (b. ca. 1783) living in Whitpain (Whitepain) Twp, in Montgomery County, PA in 1850. He named a son Jacob, and a daughter Catherine, and another later son, Abraham. Could this be the George you give as a son of Jacob Bernhard?
He also had a younger brother, Anthony, (Andreas anglicized?)who also named children some of the names you list.
Their farms were on the site of what is now Montgomery County Community College,and some of them are buried at Boehm's Church which is not far away.