Glen Gray Knoblauch, better known as Glen Gray, was a jazz saxophonist and leader of the Casa Loma Orchestra.
Gray was born to Lurdie P. and Agnes Knoblauch in Metamora, Illinois. His father was a lifelong railroad worker who died when Glen was two years of age. His widowed mother married George H. DeWilde, who was a few years younger than she was.
Gray graduated from Roanoke High School. He is said to have joined the army at seventeen and two years later he was living at home with his family. He was employed as a bill clerk for the railroad. He attended Illinois Wesleyan University but left to work for the Santa Fe Railroad.