St. Kieran, also, did good service five hundred years after his death ; for when a great chief and his band plundered Clonmacnoise and carried off the jewels from the shrine, the spirit of St. Kieran was seen in the doorway, crosier in hand, striking at the plunderers; and when they fled to their boat, St. Kieran raised up a strong wind that drove back the boat, and finally the chief robber was taken and put to death, having first confessed his crime, and testified as to St. Kieran's wrath against him.