On 3rd May 1481, the island and city of Rhodes was devastated by the largest of a series of earthquakes that rumbled on for a couple of years of fore-shocks and after-shocks. The Knights Hospitaller, a fraternity of crusaders carrying on the fight long after the Holy Land had been lost to Islam, [Acre, the last toehold, was surrendered in 1291] had their base on the island. The previous year they had withstood a costly siege by the Ottoman Turks and so were a little low in the coffers. An earthquake was the last thing they needed, but that's what they got. You cannot fight against a tectonic plate as it lumbers relentlessly Northwards. The Turks were back again in force 40 years later and in 1522 evicted The Knights Westwards, despite the contribution of doughty John Rawson from Ireland, so that they then became The Knights of Malta. Their descendants are the chaps with the white cross on a black ground who attend soccer matches and run first-aid classes, I don't think any of them are interested in spearing infidels though.
high-crosses of Clonmacnoise.