John Jacob Eckfeldt
Born in Nuremberg, Bavaria, now Germany. He came to America after 1764. Married Marie Magdalena Schneider in 1764. Maria was the mother of Adam. She died in 1773. Married Elizabeth Kunkle. She was the mother of Michael. She died in 1783 or 84. Married Elizabeth Bausch Diament October 12, 1785.
He had a blacksmith and machine shop. He built some of the first machinery for the mint including the first screw coin press. He made dies for Robert Morris of the Mint of North America in 1783.Source credit: Pete Smith, American Numismatic Biographies