Thomas Brennan Gillis Sr.

Welcome to Thomas's Legacy.

This Legacy page is a lasting memorial where everyone who loved Thomas can visit and share remembrances for years to come. Every photo, condolence or memory you post here helps family and friends keep Thomas close in their hearts.

Not sure what to say?

3 Entries

Legacy Remembers

Posted event

August 20, 2025

Sep

Mass of Christian Burial

10:00 a.m.

Holy Redeemer Church

57 Highland Ave, Chatham, MA 02633

How you can show support

Send flowers

Consider sending flowers.

Add photos

Share their life with photo memories.

Plant trees

Honor them by planting trees in their memory.

Follow this page

Get email updates whenever changes are made.

Share this page

Invite other friends and family to visit the page.

Christine Graham

Yesterday

Very sad. He was such a nice person and great personality. I enjoyed meeting him in Chatham.
Condolences to all of the Gillis family specially Jack.
With lots love.
Christine

Legacy Remembers

Posted an obituary

August 20, 2025

Thomas Gillis Sr. Obituary

Thomas B. Gillis Sr., of Sanibel Island, FL and South Chatham, MA, a devoted family man, proud U.S. Navy veteran, and longtime Raytheon executive, died peacefully at his home on August 9, 2025. He was 97.Born in Jamaica Plain, Boston, Massachusetts... Read Thomas Gillis Sr.'s Obituary

Showing 1 - 3 of 3 results