Knights Hospitaller
The Order of Knights of the Hospital of Saint John of Jerusalem (; ), also known as the Order of Saint John, Order of Hospitallers, Knights Hospitaller, Knights Hospitalier or Hospitallers, was a medieval and early modern Catholic military order. It was headquartered in the Kingdom of Jerusalem, on the island of Rhodes, in Malta and St Petersburg.
Knights Templar in popular culture
There are various legends concerning a treasure that some Templars managed to hide from King Philip and that was later lost. 
One particular story concerns Rennes-le-Château, where a treasure was supposedly found in the 19th century; one speculative source for that treasure was the long-lost treasure of the Templars.