May 3, 1557

John Knox began the Reformation in Scotland.

John Knox (1505, 1513 or 1514 – 1572) was a Scottish religious reformer who played the lead part in reforming the Church in Scotland in a Presbyterian manner. He is widely regarded as the father of the Protestant Reformation in Scotland, and of the Church of Scotland. He died in Edinburgh on November 24, 1572.

May 3, 1714

Sir Wentworth Harman, MP for Lanesborough, dies

May 3, 1926

General Strike began at midnight, the first in British history

May 3, 1915

Walter Macken, novelist, born in Galway