Jefferson, Roy Lee "Bud", of O Fallon, Missouri, died on Monday, February 14, 2011 at the age of 71. Dearest husband of Patricia Kay Jefferson nee:Patricia Kay Orf, dear son of the late Robert Earl Jefferson and Lorene Harlan, devoted father of John (Diane) Jefferson, Jerry (Tammy) Jefferson and Jennifer (Robert) Schneider; beloved grandfather of Kyle, Erin, John, Danielle, McKenna, Elizabeth and Addison; dear brother of Dean (Carole) Jefferson, George (Linda) Jefferson and the late Cecil Jefferson; beloved uncle, cousin and friend to many. Roy enjoyed golfing, fishing and hunting and was a Maintenance Mechanic for 26 years with Reckitt Benckiser before his retirement. Memorials may be made to American Cancer Society.