I found your Adam and Gertrude at
www.familysearch.com long ago. He was born in 1824 in Germany. Gertrude was born in 1828 in Germany. Married on 18 Nov 1847 in Johnstown,Cambria,Pa. I found this for my search of mom's side of the family.My ggreat grandfather was named Joseph and he married Elizabeth Samsall. One of Adam and Gertrude's kids was named Joseph. Right now I can't prove that he is the one. Maybe we are related though. I'll post any updates I find