Johann Peter Hamacher was born circa 1680 the son of Henrici Hamacher. He married first Anna Catherina Holler November 5, 1709 in Birnbach, Germany. She died January 1710 in Werkhausen, Germany. He married second Anna Elisabeth Dunschmann June 22, 1710 in Birnbach, Germany. Johann Peter Hamacher died February 1730 and was buried February 27, 1730 at Oberhattert, Germany.