Michael John O'Brien
Canadian industrialist and senator
About Michael John O'Brien
Lived 1851 – 1940 (aged 89). Michael John O'Brien was a Canadian politician, businessperson and building contractor.
The Hon. Michael John O'Brien (19 September 1851 – 26 October 1940) was a railway builder, industrialist and philanthropist. He was named to the Senate of Canada in 1918. He was a founder of the town of Renfrew, Ontario. He was instrumental in the early history of professional ice hockey in Eastern Canada.
Early life O'Brien was born in Lochaber, Nova Scotia to Irish immigrant John O'Brien (1799 - 1869) and his wife, Mary Elizabeth Cleary O'Brien (1832 - 1900), daughter of Michael Cleary and Elizabeth Foley. He attended school until Grade 8, quitting at age 14 for a water boy position at a railway construction site.
Career
Having started as a water boy, O'Brien was subcontracting for railroad work by the age of 18, then followed the new railways across the country during the early heyday of rapid railway expansion in Canada. He arrived in Renfrew, Ontario as a teenager and, in 1879, he and two partners won the contract to build the Kingston and Pembroke Railway (K & P). While walking the future rail path between Sharbot Lake to the town of Renfrew, he happened to meet the Barry family, including his future first wife, Jane "Jenny" Barry, where her father, James, had built their home on the south shore of Calabogie Lake. In 1891, he went bankrupt, after a disastrous contract for the Canada Atlantic Railway, then rebuilt his wealth through construction contracts.
O'Brien served as Commissioner of the Temiskaming and Northern Ontario Railway, from 1902 to 1905. While commissioner in 1903, O'Brien bought four claims that would become the O'Brien silver mine in Cobalt, Ontario from prospector Neil King for , then "promptly sued the owners of the adjacent LaRose claim for a piece of conflicting property." The La Rose claim had been bought from Fred La Rose by the Timmins and McMartin brothers; a protracted legal battle ensued between the "O'Brien crowd" and the "LaRose people", collectively, "The Big Cobalters", which "caught the Whitney government in the cross-fire," before a publicly profitable conclusion was devised by the Government of Ontario in 1906.
During World War I, O'Brien recruited and equipped several battalions of railway workers. His influence in Renfrew and the surrounding area included a dairy, woolens and knit factories, and saw and planing lumber mills.
Role in professional ice hockey
O'Brien's son Ambrose played varsity ice hockey at the University of Toronto; after graduation, Ambrose founded several hockey teams, financed by M.J., including teams in Cobalt, Haileybury, Montreal and Renfrew, which all played in the first season of the National Hockey Association (NHA). The organization was co-founded by Ambrose in 1909 after a dispute in the existing Eastern Canada Hockey Association professional league and the rejection of O'Brien's teams to be admitted to the ECHA. The NHA survived and later absorbed the ECHA teams to provide a single professional ice hockey league in Eastern Canada. It is the forerunner of the National Hockey League (NHL).
One of the teams, the Renfrew Creamery Kings was popularly known as the Renfrew Millionaires because of the rumoured high contract values of the players paid by O'Brien. The Kings players had been lured from other professional teams to play in Renfrew, with the goal of winning the Stanley Cup championship. O'Brien ended his funding of the mining town teams (Cobalt, Haileybury) after the first season and sold off their NHA franchises along with the Montreal franchise. The two mining town franchises were sold to Toronto interests to become the Toronto Blueshirts and Toronto Tecumsehs, beginning play in 1912. After failing twice to win the Stanley Cup, and unwilling to further underwrite the costs of the Renfrew team, O'Brien exited the ice hockey business in 1911, folding the Renfrew team. The Montreal team was sold to Montreal owners and it survives to this day in the NHL. Initially known as "Les Canadiens', it was later renamed the Montreal Canadiens, "possibly the most storied franchise in Canadian sport."
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Important facts
People in Michael John O'Brien's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Michael John O'Brien's
Frequently asked questions
Who was Michael John O'Brien?
Canadian industrialist and senator
When was Michael John O'Brien born?
Michael John O'Brien was born on 19 September 1851.
When did Michael John O'Brien die?
Michael John O'Brien died on 26 October 1940.
What was Michael John O'Brien's occupation?
Michael John O'Brien was a politician, businessperson and building contractor.
What nationality was Michael John O'Brien?
Michael John O'Brien was Canadian.
Sources & further reading
· Wikipedia: Michael John O'Brien
· DBpedia: Michael John O'Brien
Cite this page
APA: Biography.guide. (2026). Michael John O'Brien. https://biography.guide/michael-john-o-brien/
MLA: "Michael John O'Brien." Biography.guide, https://biography.guide/michael-john-o-brien/.
Chicago: "Michael John O'Brien." Biography.guide. https://biography.guide/michael-john-o-brien/.
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