I have more information on my Niebuhr family. John Niebuhr, age 59, was living in Oakdale, WI (Monroe Co.) in 1880. He was born in Hanover (Germany) He had a hotel and saloon. His wife was Sophie (Bence). This was his 2nd wife. Children living with them at that time were Dora age 22, Eliza age 20, Henrietta age 15, Martha age 13, Frank age 9, Walter age 7 and Mabel age 2. Children down through Frank are Sophie's stepchildren. I am not sure about Walter and Mabel.
In 1900 Sophia, Dora, Eliza and Frank were still in Oakdale, presumably running hotel. Walter had married by that time to Lena Lobe and they had one daughter, Hilda M. Niebuhr, born Aug 1899.
By 1920 Sophie is no longer mentioned and Dora, Eliza and Frank were still in Oakdale, probably running hotel.