Margaret Hernandez Castanon

Margaret was born in San Antonio to Juan Hernandez and Maria Garcia June 3rd, 1935. She graduated from Fox Tech High School. On December 21st, 1955, she married Arnulfo Castañon in El Paso, TX. They were married for 68 years, until his passing.

Margaret dedicated more than 20 years to her career at Frost Bank as a Commercial Teller in addition to being actively involved with the Fox Tech Alumni Class of 1955 as well as La Prensa of San Antonio.

She is preceded in death by her father, mother, and sisters, Ruth and Olivia.

Margaret Castañon is survived by her children and their spouses- Rebecca and Richard Campos, Richard and Marcy Castañon, and Rene Castañon; her grandchildren- Jessica Delgado (Philip), Jeanette Nañez (Steve), Jacqueline Campos, Kimberly Blanco (Martin), Jenna Campos, Karen Fincher (Sam), and Kevin Castañon; and her great-grandchildren- Elizabeth Delgado (Sabeel Schader), Philip Delgado, Andrew Nañez, Isaac Nañez, Gabriella Joy Delgado, Evelyn Elizabeth Faith Nañez, Joshua James Nañez, Summer Blanco, Autumn Blanco, and William Fincher.

Margaret was most happy when surrounded by her family. Every Sunday, she would host three generations in her house, continuously pressing each person, “Are you hungry?” and pointing them to the ready food on the table. From when the first person arrived for breakfast to when Wheel of Fortune came on, Grandma would stuff us full of love and food. She will be dearly missed. Her children, grandchildren, and great-grandchildren are blessed to have been forever bolstered and bound together by her devotion to her family.

Rosary and Visitation will be on March 30th, 2026 at Sunset Funeral Home. Family will visit from 5:30pm-6pm, followed by public visitation from 6pm-7pm, and concluding with the Rosary from 7pm-8pm. Appetizers and drinks will be served.

Funeral services will be held on Tuesday March 31st, 2026 at Our Lady of Perpetual Health. Burial will follow the church service at Fort Sam Houston at 2:30pm.

As a family, we wish to extend our sincere thanks to Rene Castañon, Margaret’s youngest son, for stepping forward to serve as a steadfast caretaker to our much-loved matriarch. Your devotion to her well-being and to ensuring her last years were passed with grace and love will never be forgotten.