Johann Heinrich Seggerman was born in Leer, Ostfriesland, Germany 29 July 1838. He came to America in 1857. He enlisted for the Civil War for the Union side in August 1862; he served in Company K of the 108th Illinois Volunteer Infantry. He was honorably discharged in 1865.
He married Mary Junker in December 1866 in Woodford county, Illinois. They were the parents of 9 children: Greetje "Grace" Seggerman, Laura Seggerman, Rena Seggerman, Sarah Ann Seggerman, Henry Seggerman, Harry Seggerman, Herman Seggerman, Richard "Dick" Seggerman, and Mary Seggerman. Grace the oldest passed away in Illinois in 1889.
The family moves from Woodford county, Illinois to Jefferson county, Nebraska in 1894 and lived on a farm 4 miles west of Fairbury. Six months later his wife becomes ill and passes away. (Note she passes away March 1894 according to her gravestone so possibly they moved in 1893.)
In 1895 or 1896 he is united in marriage to Mrs. Katharina (Eisenhouer) Taddiken in Jefferson county, Nebraska. She already has a son Philip (and maybe others). One child is born to John Henry and Katharina, and he or she dies in infancy in 1896.
John Henry works as a farmer according to the 1880 and 1900 census. He retires from farming in 1895 and lives in Gladstone for 5 years. Then he moves to Fairbury in December 1909 (or should this be 1900?)
In October 1909 he suffers a stroke of paralysis from which he does not recover. In February 1910 he has another stroke, and end of July suffers a third which seems to do him in. He passes away Sunday morning August 7, 1910 at 11 a.m. in Fairbury, Jefferson county, Nebraska.
The funeral service was conducted from his home Wednesday (August 10) by the pastor of the Baptist church. There was a public service conducted at Zion Lutheran Church of Gladstone. He is buried west of town at Pleasant Hill cemetery. His other 8 children are still alive at the time of his passing.
For documentation I have found him in the 1880, 1900 and 1910 US Federal censuses, I have a cemetery photo and an obituary, and I think I have a copy of his marriage license to his second wife.
His gravestone in Pleasant Hill Cemetery (not my best photo)