Diana Tennison left this life to begin her eternal life on May 7, 2022. Diana was born September 9, 1958 to Jack and Dorene Treat. Diana was the oldest of four children and the only daughter. She graduated from Stillwater High school in 1976. She continued her education at Oklahoma State University, where she took classes that fostered her love of photography. She graduated in May of 1980 with a bachelor’s degree in journalism. She met the love of her life, Marvin Tennison at Northwest Baptist Church in 1983, and they were married the following year at Baptist Temple Church in Oklahoma City on November 3, 1984. God blessed Marvin and Diana with four children, three sons and one daughter. Diana loved her children; some of the most cherished time of her life was when her children were young. Desiring to give her children a solid Christian based education she homeschooled her children for over a decade. As her children began to attend school, she worked in Christian education alongside them teaching math and other subjects for over 7 years. Diana was an active church member throughout her life; she attended Capitol Hill Baptist Church and often led bible studies and served other believers. Diana loved photography and throughout the years there was rarely an event that she didn’t document through photography. Diana enjoyed traveling and during her life went to many places including South Korea and Europe. She was diagnosed with cancer in August of 2010, however her trust in the Lord never wavered. She enjoyed life and lived beyond the expected prognosis. Throughout her last years despite her limited mobility, she still actively supported her women’s Sunday school class, prayed for others, and was a great blessing to all who knew her.
Diana was preceded in death by her parents, Jack and Dorene Treat. She is survived by her husband, Marvin Tennison of Oklahoma City, Oklahoma; her son Paul Tennison and grandson Asher of Springhill, Tennessee; son Micah Tennison and wife Katie and grandchildren Judah, Millie and Lottie of Durant, Oklahoma; son Joshua Tennison and wife Courtney of Oklahoma City, Oklahoma; daughter Mary Sanders and husband Johnny and grandchildren Natalie and Elijah of Duncan, Oklahoma; brother Curtis Treat of Jefferson City, Missouri, brother Kenny Treat of Durant, Oklahoma; and brother Carl Treat of Stillwater, Oklahoma. In lieu of flowers, memorial donations may be made to Hope Crisis Pregnancy Center in Diana's name. Please visit https://thinkimpregnant.org/, or call 405-688-8700 to make a donation.