Mary Helen Barnes died at Westminster Village in Oklahoma City, Oklahoma on Saturday, April 11, 2020. Mary Helen, as she was affectionately known, was born in Sebring, Florida July 26, 1934 to Charles and Dorothy Coachman. Her father, a former pilot, was with the FAA, and eventually moved the family to Oklahoma City, Oklahoma, where she graduated from Classen High School in 1952. Mary Helen attended the University of Oklahoma, where she joined the Chi Omega Sorority and served as vice president. She was a member of the Mortar Board and Phi Beta Kappa, and was named the outstanding senior female of her graduating class in 1956 with a degree in teaching. While at the University, she met her future husband, Eugene 'Barney' A. Barnes III, and they married in 1957. Settling in Oklahoma City, Mary Helen started her teaching career at Harding Junior High School. She had her first son Eugene 'Gene' Barnes in 1959, followed by a second son, Charles C. Barnes in 1961, and a third son James N. Barnes in 1964. Mary Helen and her Barney were very active in the lives of her children, as well as the Oklahoma City community, serving in the alter guild of her church, president of Phi Kappa Club, and later served the Chi Omega sorority as an advisor. For over 20 years, she was part of the school administration at Casady School, where Charles and James attended, in addition to working with her husband in building up his business – Group III custom framing. Mary Helen and Barney retired to Scottsdale, Arizona, twenty-four years ago to be with their oldest child Gene, and settled in the McCormick Ranch area, where she was active in the McCormick Ranch Women's Association, and was a member of Saint Barnabas Episcopal Church. She and her husband moved to Westminster Village in July 2018. Mary Helen Barnes wa survived by her loving husband of 63 years, Barney Barnes, and her two sons Gene and Charles Barnes, together with their respective wives Thelma and Hua Yao. Mary Helen also had three grandchildren, who were the apple of her eye: Erica Barnes, Sophia Barnes and Victoria Yaobarnes.