He graduated from Waco High School in 1960 and from Baylor University in 1966. On June 12th, 1965, Denny married his soulmate Mary Lou Piott in Waco, Texas. Denny spent his professional career in the medical records industry working for Blue Cross and Blue Shield and as an entrepreneur starting and growing independent companies PMS, Inc., Medical Interface Inc. and General Micrographics before retiring in 2008. Denny greatly enjoyed traveling on vacations with his wife Mary Lou. He was a very avid hunter his entire life and greatly enjoyed hunting with his friends and family. While he loved Baylor Bear football, anything associated with his Irish heritage and last name O’Neill, and many other interests, Denny “Grandpa” most enjoyed spending time loving and spoiling his grandchildren as much as possible.
Denny is survived by his wife of 54 years, two sisters, Peggy O’Neill and Betty Jo Westhelle, aunt Barbara DeArmond, two sons, Brian and wife Angie O’Neill of Flower Mound, Texas, Craig and wife Mandy O’Neill of Coppell, one granddaughter, Lauren O’Neill, two grandsons, Duncan and Cameron O’Neill, two step grandsons, Blake and Trevor Miller and numerous cousins, nieces, nephews and other loved ones.
In lieu of flowers, please make a donation to the Trump 2020 presidential campaign!
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