Joseph-Rosaire Thibaudeau (October 1, 1837 – June 16, 1909) was a Quebec

Quebec

Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

 businessman and political figure. He was a Liberal

Liberal Party of Canada

The Liberal Party of Canada , colloquially known as the Grits, is the oldest federally registered party in Canada. In the conventional political spectrum, the party sits between the centre and the centre-left. Historically the Liberal Party has positioned itself to the left of the Conservative...

 member of the Senate of Canada for Rigaud division from 1878 to 1909.

He was born at Cap-Santé, Lower Canada

Lower Canada

The Province of Lower Canada was a British colony on the lower Saint Lawrence River and the shores of the Gulf of Saint Lawrence...

 in 1837. Thibaudeau operated the Montreal

Montreal

Montreal is a city in Canada. It is the largest city in the province of Quebec, the second-largest city in Canada and the seventh largest in North America...

 branch of his older brother Isidore

Isidore Thibaudeau

Isidore Thibaudeau was a Quebec businessman and political figure. He represented Quebec East in the Canadian House of Commons as a Liberal from 1874 to 1877....

's company until 1895. In 1890, he was named sheriff for the city of Montreal. He was also president of the electric company and vice-president of the telephone company.

Thibaudeau was a member of the first Board of directors, The Northern Electric and Manufacturing Company (Nortel

Nortel

Nortel Networks Corporation, formerly known as Northern Telecom Limited and sometimes known simply as Nortel, was a multinational telecommunications equipment manufacturer headquartered in Mississauga, Ontario, Canada...

).

His nephew Alfred Thibaudeau

Alfred Thibaudeau

Alfred Arthur Thibaudeau was a Canadian politician.Born in Quebec City, the son of Isidore Thibaudeau, a Quebec businessman and political figure in Upper Canada, Thibaudeau was educated at the Quebec High School. He was the head of the firm of Thibaudeau Brothers...

 also served in the Canadian senate.

Family

Joseph Rosaire Thibaudeau married December 9, 1873, Marguerite La Mothe, daughter of Guillaume La Mothe, former Postmaster of Montreal, and his wife, Marguerite de Savoye. Marguerite Thibaudeau was born at Montreal, Quebec March 6, 1853 and educated in Montreal. She served as the President of the Notre Dame Hospital and was instrumental in raising over $50,000 for the institution. She volunteered with the National Council of Women, the Women's Historical Society, the Parks and Playgrounds Association of Montreal. She was a founder of the Ladies' Branch of the Numismatic and Antiquarian Society. The couple lived at 837 Lagauchettire Street, Montreal.
The couple had two daughters, the eldest of whom is married to Aime, son of Hon. C. A. Geoffrion, K.C., P.C. Miss Juliette La Mothe, a sister of Madame Thibaudeau, was married, in January, 1888, to the Marquis Charles de Bouthillier-Chavigny.