Called "Christian", he appeared on the US Census with his family when he was 8 in 1870, but had died, age 16, before the next US Census in 1880. Christian was born, like three siblings (Henry, Mary & William), was born in Darlington, Wisconsin. Their oldest sister Minnie was born in Braunschweiger, Germany, immigrating to America age 2 with their parents. In 1867, the family moved for the last time just across the Wisconsin border to Cass Township / Strawberry Point, Clayton County, Iowa. This is we're Christian's last three siblings were born (Charles, John Peter & Lizzie). It's also where Christian later died and is buried in St. Sebald, near Strawberry Point, Clayton County, Iowa, near the Wisconsin border. Iowa gravestones index says he was interred as "Johann Opperman". An image of the handwritten log church record of his birth and death is attached. "Johann Christian Friedrich Opperman" is entry #8, third from the bottom. Especially sadly, his 10yo younger brother they called "Charles", Georg Karl Opperman died in April, and so he is four lines above big brother Christian on the same page of congregant deaths in the year of 1878, St Sebald German Lutheran Church.

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Christian Opperman & Wilhelime/a "Mina/Meana/Minnie" geboren (née) Probst Opperman had eight children. Christian & Wilhelmine/a were born, married, and had their eldest child (Minnie here) in Braunschweig aka Brunswick, Lower Saxony aka Niedersachsen, Germany. They left out of Bremerhaven, on a ship called "Bremen," immigrating to America through New Orleans in 1858, bound for Wisconsin where they lived in Darlington, Lafayette County until 1867, then finally just over the boarder in St Sebald / Strawberry Point, Clayton County, Iowa.

Christian (Jr) & his siblings were:

1. Wilhelmine "Mena/Minnie" geb. Opperman Opperman 1855-1920
m. 1876 H.August Opperman
FOUND! Mar-2023 update by Contributor ERFliehler (49858859) Thanks!

2. Henry Carl "H.K." Opperman (Heinrich Karl) 1859-1941
1m. 1928 Caroline Meder Behrens
2m. Mary Griesinger

3. "Christian" / "Johann" Opperman (Johann Christian Friedrich) 1862-1878
m. not, died age 16

4. Mary Karolina geb. Opperman Kleinlein 1863-1938
m. John Leonard Gottlieb Kleinlein

5. William Daniel Opperman (Wilhelm Daniel) 1865-1948
m. 1891 Carolina Sophia Lindner

6. "Charles" Georg Karl Opperman 1868-1878
m. not, died age 10

7. John Peter Opperman (Johann Peder) 1871-1956
1m. 1894 Emma C. (orig Katharina) Eder (later Mrs. Leese)
2m. 1946 Mamie Folsom

8. "Lizzie" Barbara Opperman (Elizabeta Barbara) 1873-1889
m. not, died age 15