Note:  Do not rely on this information. It is very old.

Damon

Damon, a Pythagorean, and friend of Pythias or Phintias, who was condemned to death for plotting against Dionysius I. of Syracuse, but was granted time to settle his private affairs, on condition that Pythias would go bail with his life for the re-appearance of his friend. Damon returned just in time, and the tyrant, struck with astonishment at his devotion, spared his life.