Marie Rosa, the oldest known living person in Canada, celebrates her 111th birthday
The Gerontology Research Group (GRG) is pleased to announce that Mrs. Marie Dominiqua Rosa (née Delbrocco), the oldest known living person in Canada, celebrated her 111th birthday in Toronto on 17 September 2026.
Marie Rosa was born as Marie Dominiqua Delbrocco in Toronto, York, Ontario, Canada, on 17 September 1915, to Italian immigrant parents Louis and Rosa Delbrocco. She was the 4th of 12 children. Her birth was registered on 28 September 1915.
There’s a longevity history in Marie’s family. Her dad, Louis, lived to be 105, while one of her sister passed at the age of 103.
Marie married Gordon Rosa in 1952 and went on to have one daughter together – Catherine “Cathie” Sinisalo (born 1954). Gordon passed away in 2001, after which Marie didn’t remarry.
On 17 September 2025, Marie celebrated her 110th birthday and became a supercentenarian. On that day, her age was officially validated by the GRG, verified by GRG-UK Correspondent Oliver Trim.
On 31 December 2025, following the death of 111-year-old Berthe Courtemanche of Quebec, she became the oldest known living woman in Canada.
On 2 April 2026, following the death of 110-year-old Burdett Sisler of Ontario, she became the oldest known living person in Canada. She is not the oldest living Canadian-born person, however, as Katherine Baumchen of the USA is seven months older.
Marie Rosa currently lives in Toronto, York, Ontario, Canada, at the age of 111.
The GRG extends warm congratulations to Mrs. Marie Rosa on her 111th birthday.
LINKS
1. Canada’s oldest living person shares her secret as she turns 111
2. She’s seen two world wars and man land on the moon. As Canada’s oldest person turns 111, here’s what still makes her laugh
3. Happy Birthday to Marie Rosa of Toronto. She turned 111 today. (Fort Erie LaFrance Assoc. on Facebook)
4. Canada’s oldest living person, Marie Rosa, has officially reached an incredible 111 years old (Todotoronto Events on Instagram)