537 - Goths lay siege to Rome. Quickly gave up, wrote a poem instead:
It is Boredom! — an eye brimming with an involuntary tear,
he dreams of the gallows while smoking his water-pipe.
You know him, reader, this fragile monster,
—hypocrite reader,—my twin,—my brother!
1302 - Romeo and Juliet's wedding day, according to Shakespeare. I can neither confirm nor deny.