Hi Lupfers,
I have copies of work done by a Lupfer in Colorado. He was researching our line and I have copies of his documentation. He even traveled to Germany to determine our heritage. He found that the first Lupfers came to America from German speaking Switzerland around 1852. I am doing this from memory and may not have the year correct. I have the name of the ship as well. Jacob Hans Lupfer was the first to come over I believe. There are a lot of Jacobs and Caspers in our line. My grandfather was Casper Lupfer from Perry Co PA. His dad was Charles Casper Lupfer.