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Mark Andrew Ostendorf August 27, 1959 – October 27, 2025 Mark Andrew Ostendorf, 66, passed away on October 27, 2025. Born on August 27, 1959, he was the son of Olin Gene and Delores (nee: Foehrkolb) Ostendorf. A graduate of Collinsville High School, Mark studied Criminal Justice at Southwestern...
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