gates of Zaragoza. The Banu Qasi sons of Musa, apparently under the leadership of eldest son Lubb ibn Musa, then allied themselves with García, and reestablished control over their father's possessions. First, the residents of Huesca called on Mutarrif ibn Musa al-Qasawi for leadership. In January 872, Isma'il ibn Musa entered Zaragoza, and was there joined by Lubb, the two of them together taking Monzon. Isma'il also allied himself with the Banu Jalaf of Barbitanya, marrying Sayyida, daughter of Abd Allah ibn Jalaf. Furtun ibn Musa occupied Tudela, whose governor the Banu Qasi imprisoned at Arnedo, then killed following an escape. Lubb also occupied and refortified Viguera. The immediate response of emir Muhammad was to try to limit the expansion of the Banu Qasi by installing a rival dynasty, the Arab Banu Tujib, in Calatayud, the one part of their father's possessions not reclaimed. In the next year, 873, Muhammad launched a campaign against the various northern rebels. He first bought off the rebels of Toledo with governorships, and this encouraged Amrus to offer his loyalty, for which he was rewarded with Huesca where he captured Mutarrif and his family, including wife Belasquita, the daughter of García Íñiguez of Pamplona. In spite of a desperate attack by the combined troops of his brothers, Mutarrif and three sons, Muhammad, Musa and Lubb, were taken to Córdoba and crucified. The next year, Furtun died in Tudela, while Lubb was killed in an accident in Viguera in 875. This left control of the family in the hands of two men, the remaining brother Isma'il ibn Musa in Monzon, and Lubb's son, Muhammad ibn Lubb al-Qasawi, who is first known as a defender of Zaragoza against the emirate troops. Muhammad ibn Lubb Over the next decade, following the deaths of his father and two uncles, Muhammad ibn Lubb maneuvered to become the leader of the family. He resisted 879 and 882 campaigns from Córdoba. The latter was under the general Hashim ibn Abd al-Aziz, and Muhammad tried to persuade Hashim to unite with him against the Asturians, now ruled by Alfonso III. The earlier hostage-taking done by all parties, greatly complicated such situation. Hashim did not want to antagonize Alfonso, who was holding his son as a hostage. Hashim himself held a son of Isma'il ibn Musa, and he sent his captive and other gifts to Alfonso in return for his son. Muhammad would