I have a ggg gf Josef Herrmann (b. who was father of Rosa or Rosalin Schmid Herrmann Baer. He legitimized her after her mother's early death.
He was b.March 7, 1863 in Schapbach, Ortenaukreis, Baden-Württemberg, De
He died: January 1, 1915 in Germany [uncertain]
Does this fit together in your John Herrmann-- a sibling of Josef or relative of any person in John's family you were looking for?