I have Jacob L. Bickel on my gedcom. I am not his descendant, but we do have common ancestors, Johann Pauli and Anna Barbara (Burkard) Bickel both born about 1618 in Massenbach, Weurtemberg, Germany. It was their grandson Johann Christoph Bickel who immigrated to Pennsylvania in 1732 and he is the gg grandfather of your Jacob L. Bickel. If you don't have this information, email me and I can direct you to the gedcom which is online.

Neil Elvick