The True Cross is the name for physical remnants which, by the tradition of some Christian churches, are said to be
from the cross upon which Jesus was crucified.
Around 1009, the year in which Fatimid caliph Al-Hakim bi-Amr Allah ordered the destruction of the Church of the Holy Sepulchre, Christians in Jerusalem hid part of the cross and it remained hidden until the city was taken by the European soldiers of the First Crusade.
The Cross was captured by Saladin during the Battle of Hattin in 1187, and while some Christian rulers, like Richard the Lionheart, Byzantine emperor Isaac II Angelos and Tamar, Queen of Georgia, sought to ransom it from Saladin, the cross was not returned.
In 1219 the True Cross was offered to the Knights Templar by Al-Kamil in exchange for lifting the siege on Damietta. The cross was never delivered as Al-Kamil did not, in fact, have it. Subsequently the cross disappeared from historical records. The True Cross was last seen in the city of Damascus.