John Alan "Sonny" Unverzagt passed away on December 13, 2025, in Houston, Texas. Born on September 28, 1950, in Indianapolis, Indiana, Sonny lived a full and vibrant life marked by dedication to his community, deep love for his family, and a passion for the things that brought him joy.
Sonny was a devoted father to his son Tyler Unverzagt and daughter Tiffany Unverzagt. He took great pride in watching his family grow and thrive. Tyler and his wife Ashley blessed him with four grandchildren—Cooper, Charley, Walker, and Lainey—while Tiffany and her fiancé Joe Voigt gave him the joy of a granddaughter, Paisley. Sonny cherished every moment spent with his children and grandchildren, creating memories that will be treasured for generations.
He is also remembered by his siblings: sisters Patti Milliorn and Debra Unverzagt; brothers Thomas Unverzagt, Robert “Rocky” Unverzagt, William Unverzagt, and Gregory Unverzagt. His extended family includes many nieces and nephews who were touched by his warmth and humor. Sonny was preceded in death by his parents John and Doris Unverzagt, as well as sisters Kathryn Unverzagt and Jeanne Unverzagt Dodd.
Professionally, Sonny made a lasting impact through decades of service to several organizations across Houston. He was a lifetime member of the Houston Livestock Show and Rodeo for over 30 years. His commitment included active roles on the Corral Club Committee with the East Club and The Parade Committee. He also volunteered with the Hold 'Em & Hit 'Em Club, contributing time and energy to causes close to his heart.
In addition to his involvement with the rodeo community, Sonny was an influential figure in Houston’s business circles. For more than 35 years he was an active member of the Houston Apartment Association, serving on various clubs and committees throughout his tenure. His professional affiliations extended to CAI Community Association Institute as well as the Houston Restaurant Association—organizations where he built lasting relationships and shared his expertise generously.
Outside of work and volunteerism, Sonny embraced life with enthusiasm. He had a passion for golfing, building computers from scratch, playing old-school video games, admiring classic cars, and enjoying Miller Lites among friends. Time spent with loved ones—especially his kids and grandkids—was what he valued most. One of his favorite destinations was Cabo San Lucas, Mexico; he often spoke fondly of trips there with friends, calling it the best vacation he ever took.
Known affectionately as “Sonny” by many who knew him best, John Alan Unverzagt will be remembered as a loving father, grandfather, brother, friend—and a man whose presence brought laughter and light into every room he entered.
May his memory bring comfort to those who knew him and continue to inspire all who were fortunate enough to share in his remarkable journey.
Sonny was a devoted father to his son Tyler Unverzagt and daughter Tiffany Unverzagt. He took great pride in watching his family grow and thrive. Tyler and his wife Ashley blessed him with four grandchildren—Cooper, Charley, Walker, and Lainey—while Tiffany and her fiancé Joe Voigt gave him the joy of a granddaughter, Paisley. Sonny cherished every moment spent with his children and grandchildren, creating memories that will be treasured for generations.
He is also remembered by his siblings: sisters Patti Milliorn and Debra Unverzagt; brothers Thomas Unverzagt, Robert “Rocky” Unverzagt, William Unverzagt, and Gregory Unverzagt. His extended family includes many nieces and nephews who were touched by his warmth and humor. Sonny was preceded in death by his parents John and Doris Unverzagt, as well as sisters Kathryn Unverzagt and Jeanne Unverzagt Dodd.
Professionally, Sonny made a lasting impact through decades of service to several organizations across Houston. He was a lifetime member of the Houston Livestock Show and Rodeo for over 30 years. His commitment included active roles on the Corral Club Committee with the East Club and The Parade Committee. He also volunteered with the Hold 'Em & Hit 'Em Club, contributing time and energy to causes close to his heart.
In addition to his involvement with the rodeo community, Sonny was an influential figure in Houston’s business circles. For more than 35 years he was an active member of the Houston Apartment Association, serving on various clubs and committees throughout his tenure. His professional affiliations extended to CAI Community Association Institute as well as the Houston Restaurant Association—organizations where he built lasting relationships and shared his expertise generously.
Outside of work and volunteerism, Sonny embraced life with enthusiasm. He had a passion for golfing, building computers from scratch, playing old-school video games, admiring classic cars, and enjoying Miller Lites among friends. Time spent with loved ones—especially his kids and grandkids—was what he valued most. One of his favorite destinations was Cabo San Lucas, Mexico; he often spoke fondly of trips there with friends, calling it the best vacation he ever took.
Known affectionately as “Sonny” by many who knew him best, John Alan Unverzagt will be remembered as a loving father, grandfather, brother, friend—and a man whose presence brought laughter and light into every room he entered.
May his memory bring comfort to those who knew him and continue to inspire all who were fortunate enough to share in his remarkable journey.
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