A.D. White III

He was preceded in death by his father, A. David White II, and his mother, Virginia Katherine White.

He is survived by his former wife, life partner, and dear friend, Jo Hayes White; their son, A. David White IV (Sara); and four grandchildren, Hayden, Emma, Brady, and Audley. He is also survived by two beloved stepsons, Mark Gilbertson (Leslie) and Paul Gilbertson (Amy), along with their children. In addition, he leaves behind his siblings, Davena Anderton (David), Stephen White (Sandy), and Dan White (Terry), as well as numerous cousins, nieces, and nephews.

A.D. grew up in Knoxville and graduated from Bearden High School in 1964 before attending the University of Tennessee. He earned degrees in both engineering and business, then went on to serve as an officer in the United States Army for a brief tour of duty. Following his military service, he worked with several high-tech companies in Oak Ridge before co-founding Delta M Corp., a company specializing in instrumentation for harsh environments within nuclear reactors. He led and managed Delta M for more than 30 years before retiring in 2017.

In his younger years, A.D. was an accomplished percussionist, playing in several bands throughout the Knoxville area during the 1970s and 1980s. He was known for his wry sense of humor and his genuine care for others, often hosting gatherings, outings, and picnics for family and friends at his home on Fort Loudoun Lake. He deeply loved his family and took great pride in each of them. He will be missed by all who knew him.

The family would like to extend a special thank you to the caring staff at Life Care of Blount County for their dedicated support and compassion during the past six years of his residency.

A Committal Service will be held at the Whispering Waters Pavilion at Berry Highland Memorial Cemetery, 5315 Kingston Pike, Knoxville, TN 37919, on Saturday, April 11, 2026, at 11:00 a.m. Family and friends are invited to reconvene at Berry Highland Memorial Funeral Home for visitation from 11:30 a.m. to 1:30 p.m., where light refreshments will be served.

Condolences may be shared online at www.berryhighlandmemorial.com