Seibold, Aldin "Al", of O'Fallon, Missouri, died on Saturday, April 7, 2012 at the age of 92. Loving husband of the late Christine M. Seibold NEE: Herschbach; devoted father of Janet (Tom) Woodward, Mary (Ron) Midkiff, Kathy (Bill) Donze, Nancy (Mark) Gililland and Donna (David) Henderson; cherished grandfather of 5 and great-grandfather of 1. Services: Visitation will be held 9:30 - 11:00 AM, Tuesday, April 10, 2012 at St. Barnabas Catholic Church, 1400 North Main Street, O'Fallon, MO. Funeral Mass will be celebrated 11:00 AM. Memorials may be made to Karen Weidenger Foundation.