to relieve Jerusalem was defeated by a Crusader force at the Battle of Ascalon. The city itself was not captured by the Crusaders because of internal disputes among their leaders. This battle is widely considered to have signified the end of the First Crusade. Until 1153, the Fatimids were able to launch raids into the Kingdom of Jerusalem from Ashkelon, which meant that the southern border of the Crusader States was constantly unstable. In response to these incursions into Outremer, King Fulk of Jerusalem constructed a number of Christian settlements around the city during the 1130s, in order to neutralise the threat of the Muslim garrison. In 1148, during the Second Crusade, the city was unsuccessfully besieged for eight days by a small Crusader army that was not fully supported by the Crusader States.
In 1150, the Fatimids fortified the city with 53 towers, as it was their most important frontier fortress. Three years later, after a five-month siege, the city was captured by a Crusader army led by King Baldwin III of Jerusalem. It was then added to the County of Jaffa to form the County of Jaffa and Ascalon, which became one of the four major seigneuries of the Kingdom of Jerusalem.
After the Crusader conquest of Jerusalem the six elders of the Karaite Jewish community in Ashkelon contributed to the ransoming of captured Jews and holy relics from Jerusalem's new rulers. The Letter of the Karaite elders of Ascalon, which was sent to the Jewish elders of Alexandria, describes their participation in the ransom effort and the ordeals suffered by many of the freed captives.
A few hundred Jews,Karaites and Rabbanites, were living in Ashkelon in the second half of the 12th century, but moved to Jerusalem when the city was destroyed in 1191.
Islamic era
In 1187 Saladin took Ashkelon as part of his conquest of the Crusader States following the Battle of Hattin. In 1191, during the Third Crusade, Saladin demolished the city
