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Irene Ayako Uchida, OC, geneticist (born 8 April 1917 in Vancouver, BC; died 30 July 2013 in Toronto, ON). Dr. Uchida pioneered the field of cytogenetics in Canada, enabling early screening for chromosomal abnormalities (i.e., changes in chromosomes caused by genetic mutations). She discovered that women who receive X-rays during pregnancy have a higher chance of giving birth to a baby with Down syndrome and other chromosomal abnormalities. She also discovered that the extra chromosome that causes Down syndrome may come from either parent, not only the mother.

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Elizabeth (Elsie) Muriel Gregory MacGill, OC, aeronautical engineer, feminist (born 27 March 1905 in Vancouver, BC; died 4 November 1980 in Cambridge, Massachusetts). Elsie MacGill was the first woman to earn a master’s degree in aeronautical engineering (1929). She was also the first practising Canadian woman engineer. In 1938, she became chief aeronautical engineer of Canadian Car & Foundry (Can Car). There, she headed the Canadian production of Hawker Hurricane fighter planes during the Second World War. An active feminist, MacGill was national president of the Canadian Federation of Business and Professional Women’s Clubs (1962–64). She was also a member of the Royal Commission on the Status of Women in Canada (1967–70).

Key Facts
Born 27 March 1905, died 4 November 1980
First woman aeronautical engineer and aircraft designer
Key Canadian feminist
Oversaw production of fighter planes during WWII  
Nicknamed “Queen of the Hurricanes”

Oronhyatekha (pronounced O-RON-ya-day-ga, meaning "Burning Sky" or “Burning Cloud”), also known as Peter Martin, a Kanyen'kehà:ka (Mohawk) medical doctor and businessman (born 10 August 1841 on the Six Nations of the Grand River reserve near Brantford, Canada West [now Ontario]; died 3 March 1907 in Savannah, Georgia, US). In 1867, Oronhyatekha became the second Indigenous person in Canada to earn a medical degree. Passionate about Indigenous issues, he was elected to the Grand General Indian Council of Ontario and Quebec in 1872, where he fought against the restrictive measures of the Indian Act. Oronhyatekha was also a businessman and, in 1881, headed the Independent Order of Foresters.

Marcelle Gauvreau, Quebec scientist, botanist, educator, administrator, writer and journalist (born 28 February 1907 in Rimouski, QC; died 16 December 1968 in Montreal, QC). A botanist by profession, Marcelle Gauvreau made her mark as a teacher, writer, journalist, administrator and faithful collaborator of Frère Marie-Victorin (Conrad Kirouac). Through her books, articles, talks, the school she established, and her desire to promote public interest in plant life, she encouraged many Quebecers to learn about plants and to love nature in the 20th century.

Ferdinand Alphonse Fortunat Larose, agronomist (born 1 April 1888 in Sarsfield, Ontario; died 29 January 1955 in Montreal, Quebec). Throughout his career, Ferdinand Larose focused on agriculture in the United Counties of Prescott and Russel in Eastern Ontario. He is best known for having created the vast Larose Forest in a part of the counties which had become arid after intensive deforestation in the 19th century. The agronomist was also a leader for Franco-Ontarian cultivators. He chaired several cultivator associations and promoted agricultural training for Franco-Ontarians.

Nadine Rena Caron, surgeon, researcher, mentor, educator, patient advocate, community leader (born 1970 in Kamloops, BC). Nadine Caron was the first female First Nations student to graduate from the University of British Columbia Faculty of Medicine. She was also the first female First Nations general surgeon in Canada. For many years, Caron has highlighted the needs and voices of northern, rural and Indigenous populations in Canada.

Peter MacKenzie Millman, astronomer (born 10 August 1906 in Toronto, ON; died 11 December 1990 in Ottawa, ON). One of the 20th century’s leading experts on meteors, Peter Millman has been called “the father of Canadian meteoritics.”

Martha Eva Salcudean (née Abel), OC, OBC, professor of mechanical engineering (born 26 February 1934 in Cluj, Romania; died 17 July 2019 in British Columbia). Salcudean was a leading authority on computational fluid dynamics and heat transfer. In 1985, she was named chair of the department of mechanical engineering at the University of British Columbia. This made her the first female head of a Canadian university’s engineering department. Salcudean dedicated much of her academic career to forging research and development partnerships. She fostered collaboration between universities, government agencies and industry groups in sectors such as mining, pulp and paper and aeronautics.

Charles Lightfoot Roman, MD, CM, surgeon, author, researcher, lecturer (born 19 May 1889 in Port Elgin, ON; died 8 June 1961 in Valleyfield, QC). Charles Lightfoot Roman was one of the first Black Canadians to graduate from McGill University’s Faculty of Medicine and became a recognized expert in industrial medicine. He was also one of the first Black Canadians to enlist for service in the First World War, and was the only known Black person to serve with the Canadian General Hospital No. 3 (McGill). Lightfoot Roman was also likely the first Black Grand Master of a traditional Masonic lodge.

Andrew John Weaver, OBC, FRSC, climate scientist, leader of the BC Green Party 2015–20 (born 16 November 1961 in Victoria, BC). Andrew Weaver is a leading climate change researcher who made historic gains for the Green Party of British Columbia in his second career as a politician. In 2013, he was elected the province’s first Green MLA. In 2017, he led the Greens to three seats. After the 2017 election, he engineered a power-sharing deal with the BC New Democratic Party and toppled the Liberal government of Christy Clark to help John Horgan become premier.

Jean Cuthand Goodwill, OC, nurse, public servant and Indigenous health and education advocate (born 14 August 1928 on the Poundmaker Cree Nation, SK; died 25 August 1997 in Regina, SK). Cuthand Goodwill was one of the first Indigenous registered nurses in Canada. In 1974, she cofounded Indian and Inuit Nurses of Canada (now known as the Canadian Indigenous Nurses Association). She was a lifelong organizer, writer and educator who promoted First Nations health and culture.

Julie Payette, CC, CMM, COM, CQ, CD, astronaut, engineer, jet pilot, musician (born 20 October 1963 in Montréal, QC). Julie Payette is the first Canadian astronaut to board the International Space Station, which she went to twice (1999, 2009). She served as the chief astronaut for the Canadian Space Agency from 2000 to 2007. From 2013 to 2016, she was chief operating officer for the Montreal Science Centre and vice president of the Canada Lands Company. An accomplished scientific authority, musician and athlete, Payette is a board member of Own the Podium and a member of the Canadian Olympic Committee’s board of directors. Prime Minister Justin Trudeau recommended Payette as Canada’s 29th Governor General. She served in the role from 2 October 2017 until 21 January 2021, when she resigned following allegations that she was abusive toward her staff.

Joseph-Armand Bombardier, entrepreneur, inventor of the snowmobile and Ski-Doo (born 16 April 1907 in Valcourt, QC; died 18 February 1964 in Sherbrooke, QC). While Bombardier’s many inventions demonstrate his mechanical skills, his ability not only to respond to transportation needs but to create them gave rise to his namesake corporation’s record of innovation.

Onyenyechukwu (Onye) Nnorom, family physician, specialist in public health and preventive medicine (born 27 February 1981 in Montreal, Quebec). Nnorom is the associate director of the residency program in public health and preventive medicine at the University of Toronto’s Dalla Lana School of Public Health. She also leads the Black health curriculum at the university’s medical school. Her work addresses the health inequities that racialized and immigrant communities face.

Dominique François Gaspard, physician and community builder (born 22 December 1884 in New Orleans, Louisiana; died 6 February 1938 in Montreal, QC). Gaspard was a respected doctor and a trailblazer in Montreal’s Black district. After serving with distinction at a field hospital during the First World War, he devoted himself to medical practice in Montreal. He also worked to create social and intellectual outlets for Black men in the city. A bilingual Catholic, he was unique in the city’s early-20th-century anglophone  Protestant Black community. His story speaks of a complexity of language, ethnicity and migration not often explored in narratives of Quebec’s English-speaking and Black communities.

Guglielmo Giovanni Maria Marconi, electrical engineer, inventor and businessman (born 25 April 1874 in Bologna, Italy; died 20 July 1937 in Rome, Italy). Marconi’s early experiments in wireless telegraphy demonstrated the potential of long-range radio communication. He is generally considered the inventor of the radio. Marconi’s first reputed reception of a transatlantic radio signal occurred at Signal Hill in St. John’s, Newfoundland, in 1901. The following year, he built a wireless transmission station in Glace Bay, Nova Scotia. Half of the 1909 Nobel Prize in Physics went to Marconi for his work in wireless telegraphy.

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David William Schindler, OC, FRSC, FRS, AOE, scientist, limnologist (born 3 August 1940 in Fargo, North Dakota; died 4 March 2021 in Brisco, BC). Schindler was an outspoken researcher who advanced the understanding, protection and conservation of Canada’s fresh waters.

Reginald Aubrey Fessenden, electrical engineer (born 6 October 1866 in East Bolton, Canada East; died 22 July 1932 in Hamilton, Bermuda). Fessenden was a pioneer in the field of radio communication. He made the first voice transmission over radio waves. He also laid the foundations of amplitude modulation (AM) and achieved the first two-way radiotelegraphic communication across the Atlantic Ocean. His 1906 transmission of a Christmas concert is considered the first radio broadcast in history. (See also Radio Programming)

John William Dawson, geologist, paleontologist, principal of McGill University (born 13 October 1820 in Pictou, NS; died 19 November 1899 in Montreal, QC). Dawson conducted an archaeological survey and recovery mission that revealed evidence of pre-European habitation on the island of Montreal. Though Dawson is generally credited with discovering the “lost” village of Hochelaga, subsequent investigations revealed that he might only have found evidence of a smaller, related settlement. Dawson is well-known in the geological community for finding a fossil of Hylonomus lyelli (the earliest known reptile). He also identified Eozoön canadense as a gigantic single-celled organism, though it is now considered to be a pseudofossil (fake fossil). Dawson is generally credited as being the first Canadian scientist of international renown, and for his transformative tenure as principal of McGill.

Henry Norman Bethune, surgeon, inventor, political activist (born 3 March 1890 in Gravenhurst, ON; died 12 November 1939 in Huang Shiko, China).