Mercedes passes away in her sleep on Saturday, May 26, 2018. She was 96 years old. Born in Hanover, New Hampshire, she became the ultimate military wife, artist, mother, grandmother, and great-grandmother. She is preceded by her husband, Brigadier General Harold F. Knowles (USAF Ret.), a West Point graduate class of June 1943. She is survived by their four children: Jeffrey, Gregory, Constance and Judith, 15 grandchildren and 9 great-grandchildren. A funeral mass with be held on Wednesday, May 30, 2018 at 10:00 a.m. at St. Ferdinand’s Catholic Church in Blanco, Texas. She will be buried after a ceremony at Fort Sam on June 5th at 9:30 a.m.