Pride Month 2026: Dianna Boileau

After waking up from her gender-affirming surgery at Toronto General Hospital 1970, Dianna Boileau became a part of Canada’s history as one of the first people to ever receive the procedure in the country, and the first to have the surgery covered by the Ontario Health Insurance Plan.

While the milestone received some coverage in the Canadian press, Dianna was no stranger to making the news. Just seven years before undergoing surgery, Dianna stood trial for dangerous driving and criminal negligence when her car crashed into a guardrail on the 401. The trial was highly publicized, as journalists’ fascination with Dianna’s feminine appearance prompted headlines like “Woman driver 32, found to be male.”

Dianna spent her teenage years in Front Frances, Ontario where Dr. Harold Challis diagnosed her as a “transsexual,” the medical term used during the 1940s and 1950s to refer to those whose bodies did not match their gender identity. Thanks to Dr. Challis’s encouragement, Dianna’s parents accepted her identity and even moved to Thunder Bay so that Dianna could have a fresh start.

Wanting to be more independent, Dianna moved to Calgary, Edmonton, and then Toronto to work as a stenographer and legal secretary. After losing anonymity following the trial – which ended in acquittal – she lost her job, descended into alcoholism, and attempted suicide. During a moment of clarity, she met other trans individuals and began looking into gender-affirming surgery (which was then called a “sex change operation”).

Dianna began to medically transition in 1969 after consulting with American doctors. She started out taking hormone pills before undergoing a surgery in New York. Not long after her first surgery, Dianna began discussing options for removing the rest of her male sexual organs with doctors at Toronto General Hospital, who informed her that while such a surgery was doable, it could only be done with the approval of the Clarke Institute of Psychiatry, Canada’s first – and at the time, only – gender identity clinic.

The clinicians of the Clarke Institute were typically more interested in studying trans people than helping them, and only approved those who they believed had the potential to become respectable members of society. Generally, this meant that surgery was only offered to straight-identifying, white, and wealthy individuals. The Clarke had a bad reputation amongst trans people and although Boileau often described her experience there with fondness, she was subjected to very invasive tests while a patient at the clinic.

Following her surgeries, Dianna wrote Behold, I am a Woman, a memoir documenting her experience as a trans woman in Canada. The book was dedicated to her parents, the head of Clarke Institute’s gender identity clinic, and the doctors and nurses of Toronto General Hospital. After completing a publicity tour for her book, Dianna opted for the quiet life. She married, took her husband’s last name, and faded into obscurity. She passed in 2014.