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.
Gerald Greider Gerald Arthur Greider (August 30, 1923 – March 20, 1982) was an American Republican politician from Wisconsin.