4.2
Pyrrhus, thus stripped of his realm and rendered destitute of all things, joined himself to Demetrius the son of Antigonus, who had his sister Deïdameia to wife. She, while she was still a girl, had been nominally given in marriage to Alexander, Roxana’s son; but their affairs miscarried, and when she was of age Demetrius married her.See the Demetrius, xxv. 2. In the great battle which all the kings fought at IpsusIn 301 B.C. Cf. the Demetrius, chapters xxviii. f. Pyrrhus was present, and took part with Demetrius, though still a stripling.
4.3
He routed the enemy opposed to him, and made a brilliant display of valour among the combatants. Moreover, though Demetrius lost the day, Pyrrhus did not abandon him, but kept guard over his cities in Greece which were entrusted to him,Cf. the Demetrius, xxxi. 2. and when Demetrius made peace with Ptolemy, sailed to Egypt as hostage for him.