Saved By April Fool's Day.

In 1634, Nicolas Francois and his wife, Claude, the Duke and Duchess of Lorraine in France, were sentenced to death. They were imposed in their palace at Nancy.On April 1,they escaped from to freedom by climbing out of a window.Then they swam across the river Marthe to safety Witnesses WHO saw them shouted, to alert the guards, but the guards did nothing! They thought it was just an elaborate April Fool's joke!