Here's the family I'm researching from the same area:
Theobald Stroh, born Jan 5 1872, Russia, emigrated 1885 m. Katharina Hohn whose family also settled in S.D. briefly. In 1900 census the are living in Gregory County with children: William, born 1898 Gustav born Feb 6, 1900
Note on same page as 1900 US Census is Fred Stroh and his family - don't know if they're related.
The family moved to Alberta as per Canada 1901 census, they had another daughter, Pauline born 1905.I have tracked Gustav to Oregon where he married and lived out his life, but lot track of all other family members after 1906 Canada census.Seemed many families moved from Alberta to Oregon at that time, don't know why though.