428 A HISTORY OF THE CRUSADES I 
 
penings in Aleppo, Joscelin advanced upon that city in October 1127, presumably
in the hope of taking advantage of the anarchy and thereby becoming the master
of Aleppo, but soon departed in return for a cash payment. 
 Meanwhile a serious quarrel had temporarily broken the unity of the Franks
which had stood them in such good stead in their struggle against Aksungur.
Bohemond II, the son of Bohemond I, sailed from Apulia, in September 1126,
for the Holy Land and arrived at the port of St. Simeon in October or November.
He had come in response to the invitation extended to him by the citizenry
of Antioch during Baldwin's captivity as well as that offered later by Baldwin
himself. Baldwin, who had been Antioch's regent ever since Roger's death
in 1119, now, in accordance with the promise which Roger had made to Tancred
on his deathbed that he would surrender the government of the principality
to Bohemond or his heirs, turned over to him Antioch and all Cilicia. Having
obtained recognition of his supremacy from Joscelin and Pons, Bohemond II
then proceeded to Antioch with a body of troops and presently married Baldwin's
second daughter, Alice, in the closing days of September 1127.12 
 Soon enmity developed between Joscelin and Bohemond and at length led to
open hostilities. Joscelin summoned Turkish forces to his banner and with
their aid ravaged the principality of Antioch during the summer of I 127
and compelled the Antiochenes to recognize his rule. Bohemond was absent
at the time, engaged in war with the Turks in another theater. When rumors
of this quarrel reached Baldwin, he was greatly disturbed. Realizing that
this new division in the ranks of the Franks might afford the Moslems an
excellent opportunity to harass them, and desiring peaceful relations between
his cousin and his son-in-law, he speedily journeyed to Antioch to effect
a reconciliation. Joscelin was ready to accept mediation. He was now so dangerously
ill that he vowed he would become reconciled with Bohemond II, render him
satisfaction, and pay him rightful homage, if his life should be spared and
his health should be restored. The patriarch of Antioch now offered his good
offices, and Baldwin soon ended the altercation between his vassals. Perhaps
making doubly certain of 
 
 12 Matthew of Edessa, p. 547; Bar Hebraeus, Chronography (tr. E. A. Wallis
Budge), p. 253; Fulcher of Chartres (ed. Hagenmeyer), pp. 805—809,
819—822; William of Tyre, XII, so; XIII, 21; Usãmah (tr. Potter),
pp. i6o—i6i; ed. and tr. Derenbourg, p. 136; Michael the Syrian, Chronique
(ed. and tr. Chabot), p. 224. Stevenson, Crusaders, p. 119 and note 2, observes
that "Baldwin laid aside with equal gladness the burden of administering
the northern princedom." Cf. A. C. Krey, William of Tyre, II, 32, note 45.