Mark D. McGuire, of St. Peters, MO, died on July 16, 2012 at the age of 60. Dear son of the late James and Norma McGuire; loving soul mate of Shana Reitmeyer; devoted father of Sean, Stephanie, Megan and Chad; cherished brother of Tim McGuire, Kathy (Laney) Beuscher, Matt (Rebecca) McGuire, and Dennis McGuire. Beloved uncle, nephew, cousin and friend to many. Memorials may be made to donor's choice.