He was born on December 29, 1931, in Sidney, Texas, to Henry Edna and Lena Pricilla (Janes) Drennan. On September 11, 1956, he was united in marriage to Annie Latimer in Fort Worth, Texas. Howard served in the United States Air Force. He was a devoted husband, father and grandfather. He was a retired farmer and rancher.
He is survived by his wife of sixty-three years, Annie (Latimer) Drennan of Graham; daughter, Teresa Drennan Farmer and husband Justin of Graham; granddaughters, Madison Anne Farmer and Sarah Lauren Farmer, both of Graham; niece, Lorie Ward and husband Rance of Mineola; nephew, Jay Drennan and wife Denise of Mulberry, Florida; nephew, J.C. Drennan, Jr. and wife Lori of Amarillo; and great-nephews, Shawn Ward of Fort Worth and Jace Drennan of Amarillo. He was preceded in death by his parents, Henry and Lena Drennan; brother, J.C. Drennan; and nephew, Guy Drennan.