Battle of Hattin, 1187, the defeat of Guy de Lusignan, King of Jerusalem, c. 1159-94, by Saladin, Sultan of Egypt and Syria, 1138-93, and the loss of the relic of the true cross, manuscript illumination, c. 1460, from the Chronique des Empereurs, Ms. 5090, f. 73, compiled by David Aubert, who worked at the courts of Dukes Philip the Good, 1396-1467, and Charles the Bold, 1433-77, of Burgundy (Loyset Liedet)