John Sandfield Macdonald

John Sandfield Macdonald, QC (December 12, 1812 – June 1, 1872) was the first Premier of the province of Ontario, one of the four founding provinces created at the confederation of Canada in 1867. He served as both premier and Attorney-General of Ontario from July 15, 1867 to 1871.

A Reformer and advocate of responsible government, Macdonald served in all eight Assemblies of the United Province of Canada prior to Confederation. He also served in several pre-confederation administrations, including a period as co-premier of the United Province from 1862 to 1864. It was this time when Macdonald suffered a collapsed lung from chronic tuberculosis.

Macdonald was initially an opponent of confederation, but came to accept it and became an ally of Sir John A. Macdonald (no relation). John A. Macdonald helped manoeuvre Sandfield Macdonald into the position of first Premier of Ontario.

His government was moderate and initially a coalition of liberals and conservatives (described in contemporary accounts as a "Patent Combination" government), but suffered from defections by more radical Reformers. This group joined with the Clear Grits to form the opposition Liberal Party led by Edward Blake and Oliver Mowat. In December 1871, Macdonald's government was defeated by Edward Blake's Liberals. Macdonald resigned, and died several months later.

Sandfield Macdonald would be the last Roman Catholic Premier of Ontario for 132 years; not until Dalton McGuinty became premier in 2003 would another Roman Catholic assume the office. After Macdonald's tenure, sectarian tensions in the province rose, and the Conservative Party increasingly became identified with the Orange Order and sectarian Protestantism. Even though most of the party's leaders were not sectarian themselves (with a few notable exceptions), Orange Ontarians became a core constituency of the party that leaders were loath to neglect. Catholics, meanwhile, increasingly voted for the Liberal Party. While the Liberals could never be called a Catholic party, the Catholic vote became as important a constituency to the Liberals as the Orange vote became to the Conservatives.

Macdonald's brothers, Donald Alexander Macdonald and Alexander Francis Macdonald, were also politicians, and served as federal Members of Parliament. Donald, who served as an MP the longest of the three brothers, was in the House of Commons concurrently with both Sandfield and Alexander, although Sandfield and Alexander did not serve concurrently with each other.

In the early years of confederation, politicians were allowed to serve simultaneously in the House of Commons and in a provincial legislature. From 1867 to 1872, Sandfield Macdonald was also a Liberal MP in the Canadian House of Commons.