1570:

Queen Elizabeth I Excommunicated

When the staunch reformer and persecutor of heretics Pope Pius V excommunicated Elizabeth and declared her a usurper, religious tension mounted in largely Protestant England, and English Catholics came under more frequent suspicion.

777:

Saint Walburga

Due to the sea miraculously calming when she prayed on a storm-tossed ship, Walburga is a patronness of sailors and is invoked against storms and hydrophobia.

1547:

Vittoria Colonna

Although Vittoria Colonna was a fairly well-known and respected poet in her lifetime, today she is perhaps best known for her friendship with Michelangelo,