Dennis Robert O'Brien
August 29, 1960 - December 20, 2015
DENNIS R. O’BRIEN MT. VERNON, INDIANA Dennis Robert O’Brien, 55, of Mt. Vernon, Indiana, born to Robert and Dolores (Markus) O’Brien on August 29, 1960, in Cook County, Illinois, passed away Sunday, December 20, 2015, at his... View Obituary & Service Information