Patrick M. Callahan, 69, of Stickney passed away October 13, 2017. Loving husband of 42 years to the late Birute "Bea"; beloved father of Christina (Mark) Kozelka and Michael (MaryEllen) Callahan; cherished grandpa to Amanda and Jacob Kozelka; dear brother-in-law to Pete Stukelis. Visitation Friday October 20, 2017 from 2pm to 8pm at Mount Auburn Funeral Home, 4101 S. Oak Park Ave. Stickney, IL. Funeral Mass, Saturday October 21, 2017, 9:15am at St. Odilo Church, 2244 East Ave. Berwyn, IL. Interment St. Casimir Cemetery, Chicago, IL. Patrick was a Vietnam Army Veteran. In Lieu of flowers donation to the Disabled American Veterans are appreciated.