When did the father of George J. Gruen pass away ?
Dietrich Gruen Dietrich Gruen (February 22, 1847April 10, 1911), was a German born watchmaker who emigrated to the United States in the 1860s and later founded the Gruen watch Company.
James Riker James Riker (New York City, May 11, 1822 – 1889) was a New York historian and genealogist. His father, James Riker (Snr) was a merchant and landowner descended from early Dutch settlers. Riker left school at the age of sixteen to work in his father's business.