Wittgraf William ``Bill'', 60, of Gibbon, died Sunday, January 6, 2002 at his home. Mass of Christian Burial 10:30 am Thursday at St. Willibrord's Catholic Church in Gibbon, with burial in the Catholic Cemetery in Gibbon. Visitation 4-8 pm Wednesday and from 7:30-10 am Thursday at the Minnesota Valley Funeral Home in Gibbon. Parish prayer service 7 pm Wednesday eve at the funeral home.