Warren Leslie Gayman

Peacefully and surrounded by family, Warren Leslie Gayman passed away on Monday, November 9, 2026 at the age of 72 at the Markham Stouffville hospital following a long illness.

Born on December 18, 1953 in Hamilton, Ontario to Dorothy Edna Gayman (nee Smith) and Bruce Moyer Gayman.

He will be lovingly remembered and missed always by;

His wife Cathy Gayman (nee Van Den Oetelaar).

His daughter Christine Douglas (partner Steve and children Keringtyn, Ethan, Autumn, Xavier, Talyn and Brock)

His son Bradley Gayman (and daughter Taylor).

His stepdaughter Tammy DeCou (partner Ivan Perez and son Isaiah).

His stepdaughter Heidi Leask (and children Lance, Ainsley, Sidney and Joshua).

His stepdaughter Jenna Leask (partner Grant Cooke, and children Jackson, Sawyer and Evelyn).

His stepdaughter Tahney Leask (partner Kevin Hadaway and children Xander, Sage, Scarlett and Evangeline and Vera).

His stepdaughter Jasmine Leask (and children Mira and Iain).

His stepson-in-law and special friend Kiley Rahn.

Remembered and missed also by his siblings;

Sharen Diamond (partner Bert and nieces Dawn and Meri) and his twin brother Wade Gayman (partner Qiaaoyun, and nieces Lindsay and Kelly) and his brother Brian Gayman (partner Apryll and nieces Apryl and Lyndi and nephew Justin).

As a child and youth Warren lived in Hamilton, North Bay and the Sudbury area as the family followed their father in his construction career.  He completed high school in Mississauga.

His first jobs were with Mississauga Hydro and then at the Texaco oil refinery at Port Credit, Ontario.  While working at Texaco he attended the University of Toronto on a part-time basis and got his degree as an Electrical Technologist.

Upon completion of his studies at University of Toronto he began his career with OPG.  He took his training at the nuclear station in Deep River, Ontario.   He then accepted a position at the Pickering nuclear station.  For most of his career he was working out of the Pickering station except for a short stint where he worked at the Edison Nuclear Station in Southern California.  He returned to Ontario and the Pickering station due to family issues.

He had a long and satisfying career at the Pickering station, both in working within the plant and in the later part of his career in preventative maintenance planning.   He was involved in the operations involved with the installation of new reactors as well as the decommissioning and refurbishing of them.  He made many good friends while at OPG and will be missed by them.

Warren was so full of life and lived an active and healthy life style, he loved to try new things.  He loved bike riding long distances, lane swimming, running and playing piano.  He was often seen walking his dogs Maui a Rhodesian Ridgeback and Honey an American Bully together.  If you knew Warren well you knew he could not sit still, there was always something new to learn and experience.

He was a wonderful father, grandfather and husband.   He lived for his family; he was so loved by all of us!   He was the kind of grandfather that when he came in the door the grandchildren cried out “Popa, Popa” and ran to give him a hug.   He was generous and giving of himself, he was an encourager, always wanting the best for his family.

He will be deeply missed by all who knew and loved him.  His passing leaves a void that cannot be filled.  His love and memory will forever be etched in our hearts!

At the wishes of the family there will be no public service.  Please leave your memories and condolences online.  In lieu of flowers donations to the Markham Stouffville Hospital Foundation would be greatly appreciated.