" Arial; of Clarkston. " Arial; "October 21, 2011 at 63 years of age. " Arial; "Loving husband of Charlotte for 40 years. " Arial; "Dear father of Matthew C. (Bonnie) Leonard and Daniel J. Leonard. " Arial; "Beloved brother of James (Mary) Leonard, Dennis Leonard, Elizabeth (Hank) Sundell, Margaret Donia and Barbara (Michael) Grey. " Arial; "Cherished grandfather of Zachary and Benjamin. " Arial; John was employeed by Toshiba America Medical Systems installing and repairing medical equipment at many local medical facilities. " Arial; "Mr. Leonard served in the US Marines during Vietnam.