The Crusader period began in 1099 with the First Crusade's capture of Jerusalem. After the city's conquest, the Crusading order known as the Knights Templar was granted use of the Dome of the Rock on the Temple Mount. This was probably by Baldwin II of Jerusalem and Warmund, Patriarch of Jerusalem at the Council of Nablus in January 1120, which gave the Templars a headquarters in the captured Al-Aqsa Mosque. The Temple Mount had a mystique because it was above what were believed to be the ruins of the Temple of Solomon. The Crusaders therefore referred to the Al Aqsa Mosque as Solomon's Temple, and it was from this location that the new Order took the name of Poor Knights of Christ and the Temple of Solomon, or Templar knights.