Memorials to Shawn Hornbeck Foundation or charity of your choice. Errett-Koch, Melissa, of O'Fallon, Missouri, died on Wednesday, April 23, 2008 at the age of 27. Dearest daughter of Kenneth (Cheryl Bradley) Errett and Patricia (David) Langenberg, loving sister of Kenneth (Kimberly Collier) Errett, Jr., cherished granddaughter of Patsy Errett and Edna Kempen, loving niece of Tamra Jackson, special cousin to Britni and Amy Jackson, survived by aunts, uncles, family and friends. She is preceded in death by her son, Matthew John Koch; and grandfathers Joseph Errett and Frank Kempen. She was employed as a Pharmacy Tech at Schnucks Pharmacy.