Kallichoron — a river of Bithynia mentioned by Pliny and also by Scylax
Ancient Greek word, found 12 times in the texts on Socratos.
Apollonius Rhodius, Argonautica 2.904: ὦκα δὲ Καλλιχόροιο παρὰ προχοὰς ποταμοῖο
Homeric Hymns, Hymn 2 to Demeter 272: Καλλιχόρου καθύπερθεν ἐπὶ προὔχοντι κολωνῷ.
Callimachus, Hymn to Demeter 15: τρὶς δʼ ἐπὶ Καλλιχόρωι χαμάδις ἐκαθίσσαο φρητί