Dictionary of Battles / From the Earliest Date to the Present Time

by Thomas Benfield Harbottle

Jerusalem (Moslem Invasion of Syria).

Early in 637 Jerusalem was besieged by the Moslems, at first, under Abu Obeidah, and later by the Khalif Omar. After a defence of four months, during which scarcely a day passed without a sortie or an assault, the city was surrendered by the Patriarch Sophronius.