John Herman Koch
John Herman Koch was a minister and a member of the Wisconsin State Assembly. Biography. A German emigrant Koch was born on July 24, 1864. He settled with his parents near Mayville, Wisconsin in 1870 and in Hartland, Shawano County, Wisconsin in 1873. Koch later became a Lutheran minister and missionary. He died on August 28, 1929 in Milwaukee County, Wisconsin and was buried in Milwaukee, Wisconsin. Political career. Koch was elected to the Assembly in 1922. He was a Republican.