Flags were lowered to half-mast on March 3, 2026, at Brampton City Hall (left) to mourn the death of Ken Mayhew, the late president and CEO of the Osler Foundation (right).

Ken Mayhew, the late president and CEO of the Osler Foundation, is being remembered as an “extraordinary advocate” for health care and Brampton.

Flags at city hall have been lowered to half-mast to honour Mayhew, who helped fundraise and champion the Peel Memorial Centre upgrade project.

The William Osler Health System said on Tuesday that Mayhew has died. Since 2012, Mayhew was the president and CEO of the health system’s fundraising body.

He was awarded the King Charles III Coronation Medal in 2025 for his efforts to advance health care in one of the most diverse and fastest-growing communities in the country. No cause of death has been publicly disclosed.

“Ken had a remarkable ability to connect with people at every level and took the time to truly listen, to learn and to recognize the meaningful contributions of others,” the health system said in a release. “He was an extraordinary advocate for health care in the communities we serve and brought heart and purpose to everything he did.”

The City of Brampton called Mayhew a “champion for health care and a tireless advocate for the communities Osler serves.”

“His compassionate leadership – including his role in the campaign for Brampton’s second hospital – will be remembered across our city and beyond,” the city said.

Mayhew was also crowned Fundraiser of the Year from the Greater Toronto and Golden Horseshoe chapters of the Association of Fundraising Professionals, and his career was profiled in Canadian journalist Peter Mansbridge’s book ‘How Canada Works – The People Who Make Our Nation Thrive’.

“We are deeply proud of Ken’s leadership and the lasting impact he continues to make within Osler and across Canada’s charitable sector,” the health system said.


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