Family Login:

Byron Oliver Sims, Jr.

Obituary for Byron Oliver Sims, Jr.

December 2, 1924 - May 12, 2020
San Antonio, Texas | Age 95


Byron Oliver Sims, Jr. passed away May 11, 2020 in San Antonio, Tx. He was 95 years old. To friends, he was known as Byron. To his immediate family, he was known as Dad, Papa, or Sonny. To his recently deceased wife Flossie, he was called "Bug", short for love bug. They were married for 73 years. It is only fitting that Byron would join Flossie 41 days later in heaven.

Byron was born on December 2, 1924 in San Antonio. After graduating from Brackenridge High School in 1942, he enlisted in US Army Air Corps. When asked about his time in WWII, he told the story of his first mission to deliver a brand new C47 cargo and troop transport plane to Europe. With only a 10-hour range of fuel in the plane's tank, the journey could not be a direct flight to Italy. He took off from Ft. Wayne, Indiana and flew the southern route; to Florida, to Puerto Rico, to Brazil, to West Africa, to North Africa to finally land in Naples, Italy. When time came to either re-enlist or exit military service, he said "I stood looking at two lines and couldn't decide which line to get in?" His commanding officer said, "Sims you're good at math, get out and go to college." He enrolled in the University of Texas in 1947.

The week before Byron left us, he told us the story of how he met Flossie. He loved Flossie more than life itself. They knew each other in High School but didn't date. He returned from WWII in 1946 and saw Flossie at a dance. The next day he asked her out on a date in September of 1946. By January 1947 they were married. That marriage would set an example of what a Christ-like marriage looks like. Both Byron and Flossie served each other with huge, humble hearts. That love and devotion was evident to all.

After graduating from UT with a Petroleum Engineering degree in 1949, he went to work for Magnolia Petroleum Company. That company would go on to be Mobil and today ExxonMobil. Byron was a great engineer and he possessed a keen sense of physics and used good judgment as a driller and later as an executive leader in Mobil. His career at Mobil spanned 40 years. His early career assignments spanned the US from Louisiana, Kansas, Oklahoma, Mississippi, West Texas, New York, and Los Angeles. His leadership was a blessing to every team he led. His career highlight was helping to develop the Beryl field in offshore UK from London and later to lead the German Gas business in Hamburg, Germany. The oil field was not work, it was his hobby. He loved the energy industry and the benefits it brought to society.

Byron will be missed deeply by his family. We'll miss his kindness, his intelligent and thoughtful approach to life, his solid faith in Christ and his unquenchable optimism about life. He loved his Colorado cabin and the Platoro community of friends. He loved the outdoors, especially fly-fishing. He passed on the fly-fishing passion to everyone in our family. If there's a river in heaven, he's fishing it right now.

Byron is survived by sons, Byron Oliver Sims, III, Jerry C. Sims and his wife Allison, Thomas A. Sims and his wife Kathleen; grandchildren, Mark D. Sims and his wife Tricia, Byron O. Sims, IV and his wife Danielle, Kenton C. Sims and his wife Melissa, Warren C. Sims and his wife Toni, William B. Sims and his wife Ashley, Collin T. Sims and his wife Katy; great grandchildren, Aubrie, Jake, Kaitlyn, Jackson, Kenton, Byron V, Delaney, Ben, Baron, and Bobbie; nieces, Camia Hyslop, Deba Center, Gina Rubiola, and Vicki Giallanza; and nephews, Richard Carr and Kevin Dempsey.
A memorial service will be held at a later date.

Recommended Local Florist

Arrangements By

Porter Loring Mortuary North

2102 North Loop 1604 East
San Antonio, TX 78232
Map  | Profile

View Phone Number
Email Us