 In response, Ptolemy VI besieged his younger brother at Lapethus and captured him, with the help of the Cretan League.He persuaded Ptolemy VIII to withdraw from Cyprus, in exchange for continued possession of Cyrenaica, an annual payment of grain, and a promise of marriage to one of his infant daughters (probably Cleopatra Thea) once she came of age.As a result of the conflict with his brother, Ptolemy VI made particular efforts to advance his eldest son Ptolemy Eupator as heir.