Tuscany's Excalibur is the real thing, say scientists Rory Carroll in Rome Sunday September 16, 2001 The Observer The sword of St Galgano, said to have been plunged into a rock by a medieval Tuscan knight, has been authenticated, bolstering Italy's version of the Excalibur legend. Galgano Guidotti, a noble from Chiusdano, near Siena, allegedly split the stone with his sword in 1180 after renouncing war to become a hermit. For centuries the sword was assumed to be a fake. but research revealed last week has dated its metal to the twelfth century. Only the hilt, wooden grip and ...