See full bio » Dennis Franz was born Dennis Franz Schlacta in Maywood, Illinois, a suburb of Chicago, and is the son of Eleanor (Mueller) and Franz Ferdinand Schlachta, who were postal workers. He has two sisters, Marlene (born 1938) and Heidi (born 1935). He graduated from Southern Illinois University and was immediately drafted into the military. He served ... Born: October 28, 1944 in in Maywood, Illinois, USA