I had Christmas with Kopp's in the 1950's and 1960's. I met my some mother's uncle’s sixteen children in the early 1960's. They were all very tall. It was in the 1990's that we had a Kopp reunion.
         I finally start researching all lines in 1974.I was lucky my mother's mother had many articles including obits, postcards, dairies, and pictures. I found out that my  grandparents were 2nd Cousins  when they married. I went back to my  2 great grandparents on my  mother's side with this information. This family was the Friedrich Kopp and Anna Rieger who settled in Barton Township, Washington Co., Wisconsin, USA
in 1846.The Kopp Farm was under the Kopp name from 1846 until 2001. I enjoyed going
to the farm in 1970’s through 1990’s. I found on the Mar 1983 Germany Trip the
parents, siblings, and children of Friedrich and Anna from Mergelstetten, Jagstkreis, Wuerttemberg, Germany . On the 1991 Germany Trip I found Friderich Kopp born in 19 Nov 1745 from Sontheim Stuben, Jagstkreis, Wuerttemberg, Germany that his father Matthaeus Kopp was born in 03 Nov 1718 from Zang, Jagstkreis, Wuerttemberg, Germany. On the 1996 Germany Trip I and my brother found descendants family in the area Heidenheim, Wuerttemberg, Germany which has Mergelstetten from which I also found more ancestry.
         I am following all descendants of the Kopp’s
1)	Anna Margareta Roecker of Barton Township, Washington Co, Wisconsin 
2)	Katharina Krumsiek  of Nashville, Washington Co., Illinois, USA
3)	Dr Friedrich Kopp of St. Paul, Ramsey Co., Minnesota, USA 
4)	John (Johannes) Kopp of Barton Township, Washington Co, Wisconsin(Home Farm)
5)	Ursula Jeklin of  Puyallup, Pierce Co., Washington, USA
6)	Johannes Martin Kopp of Des Moines Co, Iowa, USA
7)	Christina Barbara Eberhardt of Pickerel Lake, Freeborn Co., Minnesota, USA