John - I believe my husband is related to you all as well, via Anna Katrina Kemper Immekus.
-- in your posting you say ..... One of Anna Katrina's brothers was named Bernhard Kemper [November 20,1830 in Olpe -November 29,1896 in Butler Pa. Their father Franz Kemper and Mathias Jopsef Immekus got naturalized in Fedral court on September 20,1851 The families came [for the most pat] on the Diadem . It went from Rotterdam to New York City. It arrived in New York City on August 12,1846. -----
..... I've seen a few links related to Bernard and Joseph Kemper (appears that older brother Joseph came in 1844) but have not yet collected anything from Butler that says definitely. And I'm still new at this, but am doing some research at the request of my father-in-law.
-- do you have any specific info about the brothers Bernard and Joseph? I'm trying to connect Bernard and Joseph, and find them back to Germany (and the story of why they came to America). ALso there appears to have been a sister Regina. Finally, I'm looking for Bernard's 2nd wife, Magdalena Hertz. Perhaps someone in your family has photos or bible or...?
Many Thanks,
kathy