Billy Frank Underwood, age 89 of Seguin, passed away on April 22, 2018. Visitation will be held on Wednesday, April 25, 2018 at Tres Hewell Mortuary from 5 to 7 p.m. A memorial service, will be held on Thursday, April 26, 2018 at 11 a.m. at The Country Church in Marion with Pastor Butch Ikels officiating. A reception will follow in the fellowship hall. Private interment will be held in the Elm Creek Community Cemetery. Bill was born on December 4, 1928 in Belton, Texas to Roy R. and Ima H. (Bradshaw) Underwood. Billy proudly served his country in the United States Army during the Korean Conflict. He was a devout Christian and an active member of the Country Church in Marion. He will be remembered as a teacher of horses and people with all things horses. He is preceded in death by his parents, his brother Roy J. Underwood, and his sister-in-law Janey Underwood. Survivors include his loving wife of 62 years, Barbara Underwood; sons, Bryan Underwood and wife Kelly, and Dudley Underwood and wife Melissa; grandchildren, Dax Underwood, Shyla Underwood, Thad Underwood, Kelsay Underwood and Jessica Springer; great-grandchildren, Julian Underwood and Mattie Underwood; sister-in-law, Virginia Buckelew and husband Richard; numerous nieces, nephews, cousins, other loving family members and many, many friends. Billy was loved by all and will be missed. Memorial contributions may be made to the Country Church, P. O. Box 421, Marion, Texas, 78124.