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.
Alfred Gruenther Alfred Maximilian Gruenther (March 3, 1899 – May 30, 1983) was a senior United States Army officer, Red Cross president, and bridge player. At age fifty-three, he became the youngest four-star general in the U.S. Army's history. He succeeded General Matthew Ridgway as the Supreme Allied Commander (SACEUR) in Europe serving from 1953 to 1956.