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.
Richard J. Grosh Richard Joseph Grosh (born October 29, 1927) was the thirteenth president of Rensselaer Polytechnic Institute.