Quintus Curtius Rufus, History of Alexander 9.2.7

9.2.7

Ab ea in propiorem eius, qui tum regnasset, amicitiae locum admotum interfecto eo per insidias sub specie tutelae liberum eius invasisse regnum necatisque pueris hunc, qui nunc regnat, generasse, invisum vilemque popularibus, magis paternae fortunae quam suae memorem.

His father was in fact a barber, scarcely staving off hunger by his daily earnings, but who, from his being not uncomely in person, had gained the affections of the queen, and was by her influence advanced to too near a place in the confidence of the reigning monarch. Afterwards, however, he treacherously murdered his sovereign; and then, under the pretence of acting as guardian to the royal children, usurped the supreme authority, and having put the young princes to death begot the present king, who was detested and held cheap by his subjects, as he rather took after his father than conducted himself as the occupant of a throne.