Dorothy Lee Siebert Obituary

It is with great sadness that we announce the death of Dorothy Lee Siebert in Newport Beach, California, who passed away on August 2, 2025, at the age of 88, leaving to mourn family and friends. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.

She was predeceased by: her parents, Elizabeth McEntee and Martin McEntee; and her brother Robert McEntee. She is survived by: her husband Ronald Siebert; her children, Karen Marx, Ken Siebert, Kim Howard, Kurt Siebert and Kathy Cast; and her grandchildren, Katelyn Marx, Patrick Marx, Gideon Siebert, Raymond Howard, Daniel Howard, Sierra Siebert, Jarrod Siebert, Ellie Cast and Caden Cast.

In lieu of flowers, donations may be made in Dorothy's memory to Heifer International or Project Freedom Ride, two causes close to her heart.

Report

Edit Report Authorize the original

Add a photo or a video

There is no photo or video of Dorothy Lee Siebert.
Be the first to share a memory to pay tribute.

Add a photo

Light a candle

Illuminate their memory

Give a memorial tree

Plant a tree

Family tree

Brought to you by

Sympathy messages

Would you like to offer Dorothy Lee Siebert’s loved ones a condolence message? Write your message of sympathy today.

Events

There are no events at this time. If you know of an upcoming event for Dorothy Lee Siebert, please add one.

Add an event

Family member

Solidarity program

Echovita offers a unique service that allows funds generated by the obituary notice to be shared with families that request it.

Make a request

Authorize the original obituary

Lets us publish the full obituary text along with the original picture.
Helps people recognize Dorothy Lee Siebert and express their condolences more easily.
No advertising will be displayed on this page.

Authorize the original