Roberto was born in San Antonio on April 17, 1934 to parents Juan Sierra and Lucinda Torres. He graduated from Horace Mann School in San Antonio and went on to have an exceptional career as a maintenance engineer in school districts in Texas. He also proudly served in the US Air Force.
Roberto married Natalie B. Sierra, on July 16, 1956. Roberto and Natalie's family grew with the addition of their sons Robert B. Sierra, Jr., William B. Sierra and Larry Sierra.
Roberto was preceded in death by his wife Natalie B. Sierra, and grandson Robert J. Sierra.
He is survived by his sons William Sierra, Robert Sierra, Jr., and Larry Sierra.
Roberto will be remembered as a devoted family man who loved his sons and grandson. He will be missed by his many friends and family.
A Visitation for Robert will be held Thursday, January 9, 2025 from 10:00 AM to 12:00 PM at Forest Park The Woodlands Funeral Home & Cemetery, 18000 Interstate 45 S, The Woodlands, TX 77384, followed by Liturgy of the Word from 12:00 PM to 1:00 PM.
