Fakhr al - Mulk Radwan Fakhr al - Mulk Radwan ( also " Ridwan " or " Rudwan " ) ( died December 10 , 1113 ) was a Seljuq ruler of Aleppo from 1095 to 1113 . Reign . He was the son of Tutush I and brother of Duqaq , but was raised by his tutor ( " atabeg " ) Janah ad - Dawla al - Husain . When Tutush died in 1096 , Radwan inherited his Syrian possessions and ruled from Aleppo , though Janah ad - Dawla was in charge of actual governance . Duqaq soon revolted against his brother and took control of Damascus , throwing Syria into almost chaos and anarchy . Duqaq had the support of Yaghi - Siyan of Antioch , who had no quarrel with Radwan but disliked Janah ad - Dawla ; joining Yaghi - Siyan and Duqaq was Ilghazi , governor of Jerusalem . Radwan allied with Ilghazi ' s brother Sokman . Radwan attacked Yaghi - Siyan , and when Duqaq and Ilghazi came to assist him , Radwan besieged Damascus as well . However , Radwan soon quarreled with Janah ad - Dawla , who captured Homs from him , and with his atabeg out of the alliance , Yaghi - Siyan was much more willing to assist him . This new alliance was sealed with a marriage between Radwan and Yaghi - Siyan ' s daughter . The two were about to attack Shaizar when they heard of the arrival of the First Crusade ; all the various alliances were disbanded and everyone returned to their own cities , though if any of the alliances had remained intact , or they had all worked together , they would likely have been able to prevent the success of the crusade . In 1103 Janah ad - Dawla was murdered by an Assassin named al - Hakim al - Munajjim , one of the members of the entourage of Radwan . This was the first appearance of the Assassins in Syria . Upon Duqaq ' s death in 1104 , two weak rulers followed him in Damascus and Radwan probably captured the city the same year . The throne remained in Aleppo , however . In 1105 he assisted in the defense of Tripoli , which was being attacked by the crusaders . That same year , Tancred , Prince of Galilee , regent of the Principality of Antioch , defeated him in the Battle of Artah and briefly threatened Aleppo itself . Radwan and Tancred frequently came into conflict , until Tancred reduced Aleppo to a tributary state in 1111 . The " qadi " of Aleppo , Ibn al - Khashshab , travelled to Baghdad to meet with the Abbasid caliph when Radwan was unwilling to pursue war with Tancred . Ibn al - Khashshab succeeded in having Mawdud of Mosul sent to Aleppo ' s aid , but Radwan was also antagonistic to his Muslim neighbours , even when they tried to help him against the crusaders ; Mawdud was soon murdered by the Hashshashin , possibly with Radwan ' s approval . Upon his death on December 10 , 1113 , Radwan was succeeded by his teenage son Alp Arslan al - Akhras , under the regency of Lulu and ibn al - Khashshab . Lulu did not continue Radwan ' s policy of support for the Hashshashin , and had them all expelled or killed , although this left Aleppo without any powerful allies . The city fell into near chaos , and soon came under the control of Sulaiman , Ilghazi ' s son , who had married Radwan ' s daughter . Ibn al - Khashshab was murdered by the Hashshashin in 1125 . In 1128 the city was united with Mosul by the atabeg of the latter , Zengi . Sources . < br >