Theresa Calderon Aguilera

Theresa Calderon Aguilera obituary, Los Angeles, CA

Theresa Calderon Aguilera

Upcoming Events

Dec

1

Visitation

10:00 a.m. - 12:00 p.m.

Richardson Peterson Funeral Home

123 W G St, Ontario, CA 91762

Send Flowers

Dec

1

Service

1:00 p.m. - 2:00 p.m.

Richardson Peterson Funeral Home

123 W G St, Ontario, CA 91762

Send Flowers

Dec

1

Service

2:30 p.m. - 3:00 p.m.

Bellevue Memorial Park

1240 West G, Street, CA 91762

Send Flowers

Only 5 days left for delivery to next service.

Theresa Aguilera Obituary

Obituary published on Legacy.com by Richardson Peterson Funeral Home on Nov. 25, 2025.

Publish in a newspaper

Theresa "Terry" Calderon Aguilera was born on April 4, 1958, in Upland, California, to Jesus and Estella Calderon. She passed away on October 25 at San Antonio Community Hospital.
Terry took great joy in gardening, nurturing her plants, watching movies and TV shows, and cooking for her family. She especially enjoyed decorating her home for each holiday, always adding her personal warmth and creativity.
Terry treasured the moments she shared with her family and friends. The memories from her life will be carried on in the hearts of all who loved her.
Theresa is survived by her children, Richard and Tina Aguilera; her sister, Dolores Sigala; her grandson, Richard Aguilera; and her great-grandchildren, Olivia and Alicia, along with many family members and friends. She is preceded in death by her parents and her brother, Jesse "JR" Calderon. To send flowers to the family or plant a tree in memory of Theresa, please visit our floral store.

To plant trees in memory, please visit the Sympathy Store.

How to support Theresa's loved ones
Attending a Funeral: What to Know

You have funeral questions, we have answers.

Read more
Should I Send Sympathy Flowers?

What kind of arrangement is appropriate, where should you send it, and when should you send an alternative?

Read more
What Should I Write in a Sympathy Card?

We'll help you find the right words to comfort your family member or loved one during this difficult time.

Read more
Poems of Mourning and Comfort

The best poems for funerals, memorial services., and cards.

Read more
Resources to help you cope with loss
How to Cope With Grief

Information and advice to help you cope with the death of someone important to you.

Read more
Estate Settlement Guide

If you’re in charge of handling the affairs for a recently deceased loved one, this guide offers a helpful checklist.

Read more
How to Write an Obituary

Need help writing an obituary? Here's a step-by-step guide...

Read more
Obituaries, grief & privacy: Legacy’s news editor on NPR podcast

Legacy's Linnea Crowther discusses how families talk about causes of death in the obituaries they write.

Read more
Ways to honor Theresa Aguilera's life and legacy
Obituary Examples

You may find these well-written obituary examples helpful as you write about your own family.

Read more
How to Write an Obituary

Need help writing an obituary? Here's a step-by-step guide...

Read more
Obituary Templates – Customizable Examples and Samples

These free blank templates make writing an obituary faster and easier.

Read more
How Do I Write a Eulogy?

Some basic help and starters when you have to write a tribute to someone you love.

Read more

Upcoming Events

Dec

1

Visitation

10:00 a.m. - 12:00 p.m.

Richardson Peterson Funeral Home

123 W G St, Ontario, CA 91762

Send Flowers

Dec

1

Service

1:00 p.m. - 2:00 p.m.

Richardson Peterson Funeral Home

123 W G St, Ontario, CA 91762

Send Flowers

Dec

1

Service

2:30 p.m. - 3:00 p.m.

Bellevue Memorial Park

1240 West G, Street, CA 91762

Send Flowers

Only 5 days left for delivery to next service.