Fredrick E. Wolff, 90, passed away in his Plymouth home with family near at 4:45 p.m. on Thursday, Feb. 2, 2017. Fred was born in Oak Park, Ill. on July 31, 1926 to Erwin and Martha Jane (Koontz) Wolff. He graduated from West High School with the class of 1945 and from Purdue University in …read more.