Aimee Semple McPherson (1890–1944) was born on a farm in Ontario. Widowed at 19 in China, she returned to North America, remarried, and by the early 1920s was the most famous female preacher in the United States — driving herself across the country in a "Gospel car" and filling civic auditoriums.
In 1923 she opened the 5,300-seat Angelus Temple in the Echo Park district of Los Angeles, and in 1924 she launched KFSG — one of the first religious radio stations in the United States and only the third station of any kind in Los Angeles. Her four-point summary of the gospel (Jesus as Saviour, Baptiser in the Spirit, Healer, and Coming King) gave the movement its name: the Foursquare Gospel.
Today the International Church of the Foursquare Gospel reports more than 9 million members across 150+ countries. McPherson herself was a complicated public figure — survivor of a still-disputed 1926 disappearance, subject of repeated tabloid scandal — but her organisational legacy is one of the largest Pentecostal denominations in the world.