On May 18, 1926,

evangelist Aimee Semple McPherson vanished while visiting a beach in Venice, Calif. (McPherson reappeared more than a month later, saying she'd escaped after being kidnapped and held for ransom, an account that was greeted with skepticism in some quarters.)

In 1012,

Theophylact, son of Gregory, Count of Tusculum, became Pope Benedict VIII, succeeding Pope Sergius IV.

In 1642,

the Canadian city of Montreal was founded by French colonists.