attempted to attack a baptised coreligionist who had taken refuge in a church. The seafaring population rose against them, fired their houses, and put them to the sword. So, too, at Stamford Fair, on 7 March 1190, many were slain, and on 18 March, 57 were slaughtered at Bury St Edmunds. The Jews of Lincoln saved themselves only by taking refuge in the castle. Isolated attacks on Jews also occurred at Colchester, Thetford, and Ospringe. A significant loss of life occurred at York on the night of March 16 (Shabbat HaGadol, the Shabbat before Passover) and 17 March 1190. As crusaders prepared to leave on the Third Crusade, religious fervour resulted in several anti-Jewish violences. Josce of York, the leader of the Jews in York, asked the warden of York Castle to receive them with their wives and children, and they were accepted into Clifford's Tower. However, the tower was besieged by the mob of crusaders, demanding that the Jews convert to Christianity and be baptized. Trapped in the castle, the Jews were advised by their religious leader, Rabbi Yomtov of Joigny, to kill themselves rather than convert; Josce began by slaying his wife Anna and his two children, and then was killed by Yomtov. The father of each family killed his wife and children, before Yomtov and Josce set fire to the wooden keep, killing themselves. The handful of Jews who did not kill themselves died in the fire, or were murdered by rioters. Around 150 people are thought to have been killed in the incident. Ordinance of the Jewry, 1194 During Richard's absence in the Holy Land and during his captivity, the Jews of England were harassed by William de Longchamp. The Jewish community was forced to contribute 5,000 marks toward the king's ransom, more than three times as much as the contribution of the City of London. On his return, Richard determined to organise the Jewish community in order to ensure that he should no longer be defrauded of his just dues as universal legatee of the Jewry by any such outbreaks as those that occurred after his coronation. Richard accordingly decided, in 1194, that records should be kept by royal officials of all the transactions of the Jews, without which such transactions would not be legal. Every debt was to be entered upon a chirograph, one part of which was to be kept by the Jewish