Passage 4.29.1
μετὰ δὲ οὐ πολὺν χρόνον τοῦ ἔργου τοῦ πρὸς Ἤλιδι Μακεδόνες καὶ Δημήτριος ὁ Φιλίππου τοῦ Δημητρίου Μεσσήνην καταλαμβάνουσι. τὰ μὲν δὴ πολλὰ ἔς τε αὐτὸν Φίλιππον καὶ τὰ ἐς Δημήτριον τὸν Φιλίππου τολμηθέντα ἐκ Περσέως ἐν τοῖς Σικυωνίοις ἔγραψα ἤδη λόγοις· τὰ δὲ ἐς τὴν κατάληψιν τὴν Μεσσήνης ἔσχεν οὕτω.
Not long after the campaign against Elis, the Macedonians and Demetrius, son of Philip, son of Demetrius, seized Messene. Much of what Perseus dared against Philip himself and against his son Demetrius I have already recorded in my account concerning Sicyon. Regarding the capture of Messene, events were as follows.