Zygmunt Grzesiak
January 25, 1936 ~ February 4, 2026
Resided in:
Dix Hills, NY
Zygmunt Grzesiak, 90, of Dix Hills, passed away peacefully on February 4, 2026.
Ziggy was born on January 25, 1936 In Poland. He was the child of Walter and Julia and brother of Wanda and Jan.
Ziggy and his family arrived to the United States in 1955. Ziggy served in the United States Army from 1958-60. In November 1961, he met his future wife Margaret. They married in August 1963. They had three children, Irena (John), Susan (Bill), Robert (Angela). He was a proud grandfather of Ashley (Matt), Johnny (Colleen), Katelyn, Julia ( Nick), Emily, Natalie, Christopher and Alex. He was also a proud great grandfather of Jack and Charlie.
In 1970, Ziggy started his own business Trebor Instrument Corp.. He continued to run a successful business until his passing.
In Lieu of flowers, the family appreciates donations to Tunnel to Towers (T2T.org)
Services
Visitation: Thursday, February 19, 2026 2:00 pm - 4:00 pm
Branch Funeral Home of Commack
2115 Jericho Turnpike
Commack, NY 11725
Second Visitation: Thursday, February 19, 2026 7:00 pm - 9:00 pm
Branch Funeral Home of Commack
2115 Jericho Turnpike
Commack, NY 11725
Interment: Friday, February 20, 2026 11:30 am
View current weather.
Charities
The family greatly appreciates donations made to these charities in Zygmunt Grzesiak 's name.





Hello,
We are very sorry to hear the news of Ziggy’s passing. He was a brilliant person who was always willing to help everyone. We would contact Ziggy whenever we needed a special tool or an automated piece of equipment and he would always come through with some unique idea that made a huge impact in our efficiencies. He was respected by all of us at Innovative Power Products not only for his mind but for his wonderful personality. We will certainly miss him. God bless him. Tom Passaro
With deepest sympathy.
It is with great sorrow that we learned of the passing of my friend, Ziggy. For the many years that he was my client and friend, he was a man of integrity and good nature. He will be sorely missed. My heartfelt condolences to his wife, Margaret, his children and his entire family.
With sympathy,
Jack Roseman
May we add our condolences to the many who are mourning the passing of our client, Zygmunt Grzesiak. We hope that the fond memories of Ziggy will be a comfort to Margaret, his dedicated wife of more than 60 years, and their entire family.
With sympathies,
Phyllis Munk,
Shawn Karp, CPA
Thoughts and Prayers are with all of you. Ziggy was a wonderful man. A true Gentleman. I know Ziggy through Modular Devices. I will miss his smile and his kindness. May he rest peacefully and may family and friends find comfort in the memories. God Bless.
From your family in Sint Maarten
We hardly knew each other and yet Ziggy was always the nicest and most welcoming to me.
He is missed