Duncan Campbell Ross was a Canadian lawyer

Lawyer

A lawyer, according to Black's Law Dictionary, is "a person learned in the law; as an attorney, counsel or solicitor; a person who is practicing law." Law is the system of rules of conduct established by the sovereign government of a society to correct wrongs, maintain the stability of political...

 and 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...

 politician. He sat in the Legislative Assembly of Ontario

Legislative Assembly of Ontario

The Legislative Assembly of Ontario , is the legislature of the Canadian province of Ontario, and is the second largest provincial legislature of Canada...

 representing Middlesex West

Middlesex West

Middlesex West was a federal electoral district represented in the Canadian House of Commons from 1867 to 1968. It was located in the province of Ontario...

 from 1907 to 1908 and Middlesex North

Middlesex North

Middlesex North was a federal electoral district in Ontario, Canada, that was represented in the Canadian House of Commons from 1867 to 1917. It was created by the British North America Act of 1867 which divided the County of Middlesex into three ridings: the Middlesex North, Middlesex West and...

 from 1908 to 1909.

He represented Middlesex West

Middlesex West

Middlesex West was a federal electoral district represented in the Canadian House of Commons from 1867 to 1968. It was located in the province of Ontario...

 in the House of Commons

Canadian House of Commons

The House of Commons of Canada is a component of the Parliament of Canada, along with the Sovereign and the Senate. The House of Commons is a democratically elected body, consisting of 308 members known as Members of Parliament...

 from 1909 to 1921. During the Conscription Crisis of 1917

Conscription Crisis of 1917

The Conscription Crisis of 1917 was a political and military crisis in Canada during World War I.-Background:...

, Ross remained loyal to the anti-conscription (and largely francophone) Laurier Liberals

Laurier Liberals

Prior to the 1917 federal election in Canada, the Liberal Party of Canada split into two factions:* the Laurier Liberals, who opposed conscription of soldiers to support Canada's involvement in World War I and who were led by former Prime Minister Sir Wilfrid Laurier; and* the Liberal Unionists who...

, and was one of only 8 members of the faction to be elected from Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

 in that year's election

Canadian federal election, 1917

The 1917 Canadian federal election was held on December 17, 1917, to elect members of the Canadian House of Commons of the 13th Parliament of Canada. Described by historian Michael Bliss as the "most bitter election in Canadian history", it was fought mainly over the issue of conscription...

.

He is the son of Sir George William Ross

George William Ross

Sir George William Ross was an educator and politician in Ontario, Canada. He was the fifth Premier of Ontario from 1899 to 1905....

.