John M Mohan, age 88, former history teacher at Quigley Seminary South and Vice Principal at Marian Catholic High School, passed from this life peacefully at his home in Chicago. John is the beloved husband of Jane nee Dagenais and the loving father of Marlene (Charles) Balling, Anne Marie (Tim) Flemke and James (Mary Carol) Mohan. He is the proud grandfather of Anna, Julia, Alexandra, Timothy, Curtis Stanich, Rowen, Matthew, Thomas and Malachy. Visitation for John will be held Tuesday, September 21, from 3:00 pm to 8:00 pm. Chapel prayers begin Wednesday 9:30am at the Krueger Funeral Home, 13050 S. Greenwood Ave., Blue Island then to St. Benedict Church, 2339 York St., Blue Island for Mass at 10:30am. Interment St. Benedict Cemetery, Crestwood.