Marilyn was born in Dutton, OK to Ruth Lee (Boland) and Raymond Whitley. She was preceded in death by her parents and her grandson, Davion. Marilyn is survived by her husband Anthony F. Koehler, Jr.; son, John William Rader and wife Becky; step children, Anthony F. Koehler, III and wife Maria, Timothy Eric Koehler and wife Amy, Erin Dawn Koehler and husband Kevin; grandchildren, Joe, Nathan, Katie, Olivia, Christian, Zalyn, K’dah, Jonah, Danielle, Gavin, and Alannah; great-granddaughter, Everlie; brother, Lyndon Whitley and wife Mary; niece, Michelle; and nephew Lyndon, Jr and many other family members and friends. Visitation will be 1-8 pm, Friday, February 9, 2018 with family receiving guests from 6-8 pm at Buchanan Funeral Service. Services to celebrate her life will be 10 AM, Saturday, February 10, 2018 in the chapel of Buchanan Funeral Service with burial at 1 PM at Fairlawn Cemetery in Chickasha, OK.