The only thing I can add to your lineage is the following: I show Joseph's brother was named Peter Amandus Kaltz (b.10/21/1887, d. June 1971). He married Estelle Limberger (b. 5/29/1891, d. Jan 1974).
They had five children: Lorraine; Mary Louise (m. August Konkel); Leo (b.Feb 18,1914, d.Dec 1971); Ralph C. (b.Oct 12, 1916); and, Milton (b.Apr 1, 1922, d.June 1987).