Passage 2.21.7
ἐν δὲ Ἄργει παρὰ τοῦτο δὴ τὸ μνῆμα τῆς Γοργόνος Γοργοφόνης τάφος ἐστὶ τῆς Περσέως. καὶ ἐφʼ ὅτῳ μὲν αὐτῇ τὸ ὄνομα ἐτέθη, δῆλον εὐθὺς ἀκούσαντι· γυναικῶν δὲ πρώτην αὐτήν φασι τελευτήσαντος τοῦ ἀνδρὸς Περιήρους τοῦ Αἰόλου---τούτῳ γὰρ παρθένος συνῴκησε---, τὴν δὲ αὖθις Οἰβάλῳ γήμασθαι· πρότερον δὲ καθεστήκει ταῖς γυναιξὶν ἐπὶ ἀνδρὶ ἀποθανόντι χηρεύειν.
In Argos, next to this monument, is the tomb of Gorgophone, daughter of Perseus. The reason why she was given that name is immediately clear to anyone who hears it ("Gorgon Slayer"). They say she was the first among women who, after the death of her husband Perieres son of Aeolus—to whom she had been joined while still a maiden—married again, this time to Oebalus. Previously, it had been customary for women to remain widows when their husbands died.