Zengids, Ayyubids and Seljuqs 725
princes is suspiciously high. Ultimately (by the 1120s), the office and title of
atabeg became quasi-hereditary, though the term was also still used in the tradi-
tional way down to the mid-thirteenth century. It sometimes became attached
to the rulers of a particular city, even when no Seljuqid princes had resided
there for decades, and likewise it could be passed on down from father to son.
By the mid-twelfth century, the title of atabeg often meant only that one was
an autonomous territorial ruler whose authority had its origins in the Seljuqid
empire.
Muhammad Tapar was an effective and respected ruler, but like his father he
died quite young, at the age of thirty-six, and left his empire to five young sons
and his brother Sanjar. There was no question of displacing Sanjar, who had
had thirteen years to consolidate his position in Khurasan and was far older and
more experienced than his nephews. Indeed, he quickly made himself sultan
mu
azzam and would hold that rank until his death in 1157.Iraq and western
Iran remained in the hands of the sons of Muhammad Tapar – though they were
now subordinate to Sanjar – and they would dominate the stage there for the
next three decades. The oldest, Mahmud (regn. 1118–31), was the most powerful
ruler in Iraq and western Iran, though he had to face constant rebellions and
demands for autonomy from his four brothers (or, rather, since they were
still young children, from the atabegs who guided them). He was never quite
able to establish his authority in Azerbayjan, and Syria and Mesopotamia
were only tenuously subject to him. He also had to deal with an ever more
assertive
Abbasid caliphate, which was no longer willing to be dominated by an
obviously weakened Seljuqid regime. Mahmud had the better of this contest,
but in the following decades the tide would turn and a small but increasingly
prestigious caliphal state would reclaim a significant role in the politics of the
Muslim world. Concessions in the form of iqta
s and hereditary appanages
to his brothers, their atabegs, and powerful amirs, which were necessary to
maintain a viable basis of political support, inevitably weakened his control
over his domains and sapped his fiscal resources.
Mahmud died very young, at the age of twenty-seven, and was succeeded as
sultan in Iraq by his brother Mas
ud (regn. 1134–52). Masud’s long reign was not
without achievements, but at bottom it was characterized by an intensification
of all these trends: the sapping of the sultan’s authority and resources, the rise
of atabegs and amirs to a degree of power hardly inferior to the sultan’s, and
aresurgence of caliphal autonomy and prestige under the able and ambitious
al-Muqtafi (regn. 1136–1160). After Mas
ud died, his successors were never
able to re-enter Baghdad (the traditional capital of the western Seljuqids since
Tughril Beg had occupied the city in 1055), and direct Seljuqid rule was more
and more restricted to north-western Iran. Indeed, the Seljuqid sultans now fell
under the domination of the powerful atabegsofthis region. The last Seljuqid
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