Prinster, Mary Ellen, of St. Charles, Missouri, died on Sunday, October 10, 2010 at the age of 82. Loving wife of Ralph H. Prinster; beloved daughter of the late Ambrose "Bud" and Adele Ellen Rothermich; devoted mother of Ellen (Richard) Gordon, Margaret (Glenn) Newsom, John (Diane) Prinster, , Karen (Douglas) Macalla and Marybeth Kohlfeld; cherished grandmother of Lindsey Gordon, Weston Gordon, Adam (Karlene) Newsom, Ross Newsom, Christine Prinster, Michelle (Jared) Beucke, Clayton, John and Connor Macalla, Kyle, Bradley and Emily Kohlfeld; dear sister of Paul (Anna Marie) Rothermich; beloved sister-in-law, aunt, cousin and friend to many. Mary Ellen was a loving and devoted wife, mother and grandmother. She is preceded in death by her brother Earl Rothermich. Mary Ellen was a member of St. Peter Catholic Church. She enjoyed playing pinochle, crossword puzzles, and golfing. Memorials may be made to SSM Hospice or American Cancer Society.