Johann Herman "John" Koopman (H242) was born 18 Nov 1869 in Wüsting, Niedersachsen, Germany to Johann Diedrich and Meta Sophie Elise (Heyne) Koopmann.
John immigrated to America at the age of 15 on 9 May 1885 (ship unknown) in the port of New York, New York.
John married Carolina Mathilde Sophie "Karoline" "Lena" Koester on 17 Feb 1899 in Hooper, Dodge, Nebraska, United States. Karoline was born 13 Mar 1880 in Elsfleth, Neidersachsen, Germany to Johann Heinrich "John" and Johanna Sophie (Michael) Koester (H302 and H303).
John and Karoline had the following children:
- Sophie Johanna Koopman - born 26 Aug 1899 in Nebraska, United States. She died at the age of 88 on 9 Nov 1987 in Pender, Thurston, Nebraska, United States.
- Bertha Friederike Koopman - born 27 Aug 1900 in Wisner, Cuming, Nebraska, United States. She died at the age of 70 in 1970.
- Herman Martin Koopman - born 13 Nov 1902 in Pender, Thurston, Nebraska, United States. He died at the age of 70 on 6 May 1973 in Emerson, Dixon, Nebraska, United States.
- George Koopman - born 19 May 1903 in Nebraska, United States. He died at the age of 19 on 23 Jul 1922.
- Martha Caroline Koopman - born about 1906 in Nebraska, United States. She died at the age of 90 on 12 May 1996 in Rapid City, Pennington, South Dakota, United States.
- Ella Koopman - born about 1908 in Nebraska, United States.
- Annchen Mathilda Sophie "Annie" Koopman - born 11 Nov 1909 in Pender, Thurston, Nebraska, United States. She died at the age of 103 on 21 Jun 2013 in Bel Air Nursing Home, Norfolk, Madison, Nebraska, United States..
- Heinrich Hermann "Henry" Koopman - born about 1912 in Nebraska, United States.
- Caroline Koopman - born 9 Oct 1914 in Pender, Thurston, Nebraska, United States. She died at the age of 65 in Jan 1980 in Wayne, Wayne, Nebraska, United States.
- Frieda Helen Koopman - born 8 Jan 1917 in Pender, Thurston, Nebraska, United States. She died at the age of 89 on 8 Jan 2006 in Fort Myers, Lee, Florida, United States.
1900 - US Federal Census - Thayer Township, Thurston, Nebraska, United States (Occupation: Farming)
1910 - US Federal Census - Thayer Township, Thurston, Nebraska, United States (Occupation: Farmer, General Farm)
1910 - US Federal Census - Thayer Township, Thurston, Nebraska, United States (Occupation: Farmer, General Farm)
Karoline died at the age of 39 on 23 Sep 1919 in Thurston County, Nebraska, United States. She was buried in St. Peter's Lutheran Cemetery, Pender, Thurston, Nebraska, United States.
1920 - US Federal Census - Thayer Township, Thurston, United States (Occupation: Farmer, General Farm)
1930 - US Federal Census - Thayer Township, Thurston, United States (Occupation: Farmer, Retired)
1930 - US Federal Census - Thayer Township, Thurston, United States (Occupation: Farmer, Retired)
John died at the age of 61 on 18 Nov 1930 in Thurston County, Nebraska, United States. He was buried in Rosehill Cemetery, Pender, Thurston, Nebraska, United States.