Langdon, Colleen Mae, of O'Fallon, Missouri, died on Thursday, July 24, 2008 at the age of 81. Loving wife of the late Wendell Langdon; dearest daughter of the late Edward Washington and the late Mary Elizabeth Richards; devoted mother of Wendell G. (Elizabeth) Langdon, Dennis L. (Lea) Langdon, Paula S. (Raymond) Strehl, Rita J. (the late Randy) Schmitt and Ronald R. (Millie) Langdon; cherished grandmother of Brian Strehl, Christopher Strehl, Heather (Jared) Hamline, Megan Schmitt, Nicholas Schmitt, Kylie Schmitt, Kalani Langdon, Erin Langdon, Nathaniel Langdon, Robin (Frank) Unger, Alex (Courtney) Perry, Jacob Langdon and Paul Langdon; beloved great-grandmother of Duran Strehl, Isabella Hamline and Mara Hamline; dear sister to the late Cohen Richards. Memorials may be made to the Lakota Indian School.