Olegario is survived by his wife, Maria Guadalupe Alfaro; his son Gary Villarreal Jr.; his daughter Yolanda Casillas; and his son Abel Alfaro; 6 Grandchildren; 10 Great Grandchildren.
A viewing for Olegario will be held Tuesday, May 27, 2025 from 5:00 PM to 9:00 PM at Dopkins Reedley Funeral Chapel, 2200 S. Reed Ave., Reedley, CA 93654. A holy rosary prayer service will occur Tuesday, May 27, 2025 from 6:30 PM to 7:00 PM, 2200 S. Reed Ave., Reedley, CA 93654. A funeral mass will occur Wednesday, May 28, 2025 from 10:00 AM to 11:00 AM at Saint Anthony of Padua North, 1018 N Frankwood Ave, Reedley, CA 93654. A committal service will occur Wednesday, May 28, 2025 from 11:00 AM to 11:45 AM at Smith Mountain Cemetery, 42088 Rd 100, Dinuba, CA 93618.