イサキオス2世アンゲロス
After King Baldwin I of Jerusalem presented King Sigurd I of Norway with a splinter of the True Cross following the Norwegian Crusade in 1110, 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.