Orf, Mary "Marie", of O'Fallon, Missouri, died on Friday, April 27, 2012 at the age of 99. Loving wife of the late Greg Orf, dear daughter of the late John H. and Emma C. Gentemann, beloved mother of the late Ted Orf, and cherished sister of the late James Gentemann. Marie is survived by several nieces and nephews, and loved by many other family and friends. Memorials may be made to St. Vincent DePaul Society.