Keith was born on May 29, 1956, in Midland, Texas, to Arnold Ray Doak Sr. and Ruby Ellen (Kay) Donihoo. He grew up with his siblings, Allen, Ray, RueDonna, and Diana.
Keith attended Edmond Public Schools and lived in Edmond, Oklahoma, from 1964 until 1986, when he moved to Purcell, Oklahoma.
On June 16, 1991, Keith married Marty (Jones) Doak. Together they built a life centered around family and raised four children: Robert Jr., John, Auther, and Steven.
Keith found joy in spending time with friends and family, sharing laughter, stories, and memories with those he loved. Above all else, he loved his family deeply and cherished every moment spent with them.
He was preceded in death by his father, Arnold Ray Doak Sr., his brother, Allen Ray Doak, and his sister, Diana “Dede” Lee Doak.
Keith is survived by his mother, Ruby Donihoo and her husband William Donihoo of Bethany, Oklahoma; his wife, Marty Doak of Purcell, Oklahoma; his brother, Ray Doak and his wife, Keri Doak of Guthrie, Oklahoma; and his sister, RueDonna Wilkins and her husband, Ronnie Wilkins of Norman, Oklahoma and numerous grandchildren, great-grandchildren, nieces, and nephews who will cherish and carry on his memory.
Services for Keith will be held at Chapel Hill Funeral Home on Friday, March 20, 2026, at 10:00 a.m. He will be laid to rest at Chapel Hill Memorial Gardens.
