The following data is extracted from Ida County, Iowa Biographies.
Claus Rochau of Galva Township, Ida County, Ia. resides on Section 3. He has been a resident of the township since 1877, and is one of the old settlers. He was born in Germany, near Holstein, in 1842. He was the son of Hans and Catherine Rochau, both natives of Germany. In 1860, Claus crossed the great waters to America.
He married Minnie Bower in Davenport, a native of Germany. She came to America with her parents, Mr. & Mrs. Carl Bower, when quite young.
Claus and Minnie had 10 children: Gusta, Herman, Annie, Lizzie, Minnie, Emma, Willie, John, Katy, and Alice. He served in the office of School Director.
Source: Ida County, Iowa Biographies