Cephissus (Athenian plain) in the context of "Hermos (deme)"

Colonus or Kolonos (/kəˈloʊnəs/; Ancient Greek: Κολωνός, translit. Kolōnós) was a deme of the phyle Aegeis, of ancient Attica, celebrated as the deme of Sophocles, and the scene of one of the poet's tragedies, was situated ten stadia from the gate of the city, called Dipylum, near Plato's Academy and the river Cephissus. It derived its name from two small but conspicuous heights, which rise from the plain a little to the north of the Academy. Hence it is called by Sophocles "the white Colonus". It was under the especial care of Poseidon, and is called by Thucydides the ἱερόν of this god. It is frequently called Colonus Hippius or Kolonos Hippeios (Κολωνός Ἵππειος) or Hippius Colonus or Hippeios Kolonos (Ἵππειος Κολωνός), both meaning "Colonus of the Horses", to distinguish it from the "Colonus Agoraeus" in Athens. Besides the temple of Poseidon, it possessed a sacred grove of the Eumenides, altars of Athena Hippia, Demeter, Zeus, and Prometheus, together with sanctuaries of Peirithous, Theseus, Oedipus, and Adrastus. According to Greek mythology, Oedipus was buried there, as described by Sophocles, who was born there, in his Oedipus at Colonus. The natural beauties of the spot are described by Sophocles in the magnificent chorus: "Here the nightingale, a constant guest, trills her clear note under the trees of green glades, dwelling amid the wine-dark ivy and the god's inviolate foliage, rich in berries and fruit, unvisited by sun, unvexed by the wind of any storm. Here the reveller Dionysus ever walks the ground, companion of the nymphs that nursed him."

In the Athenian oligarchic revolution of 411 BCE, the oligarchs convened at the sanctuary of Poseidon Hippios at Colonus to frame their new constitution.

Academus (/ˌækəˈdiːməs/; Ancient Greek: Ἀκάδημος, romanized: Akádemos), also Hecademus (Ancient Greek: Ἑκάδημος, romanized: Hekádemos), was an Attic hero in Greek mythology. The site of Academus, either a grove or a park, which became known as Akademeia, lies on the Cephissus, six stadia from Athens. He is the namesake of the Academy founded by Plato, who taught his students at the site, and as such of the modern English word academy, signifying an institution of higher learning.

In Greek mythology Cephissus also spelled Kephissos (/ˈkɛfɪˌsəs/ or /ˌkɪfɪˈsoʊs/; Ancient Greek: Κηφισός, romanized: Kephisos) is a river god of ancient Greece, associated with the river Cephissus in Attica and/or with the river Cephissus in Boeotia, both in Greece.

In Greek mythology, Praxithea (/ˌpræɡˈzɪθiə/; Ancient Greek: Πραξιθέα) was a name attributed to five women.

• Praxithea, a Naiad nymph. She married Erichthonius of Athens and by him had a son named Pandion I. Praxithea's sister Zeuxippe married her nephew Pandion, and to them were born Erechtheus, Butes, Procne and Philomela. She was also called Pasithea.
• Praxithea, an Athenian daughter of Phrasimus and Diogeneia, daughter of the river-god Cephissus. She became queen of Athens after marrying King Erechtheus by whom she Cecrops, Pandorus, Metion, Protogeneia, Pandora, Procris, Creusa, Oreithyia and Chthonia. Praxithea's other possible children were Orneus, Thespius, Eupalamus, Sicyon and Merope.
• Praxithea, the woman that cried out when she saw Demeter holding Metanira's son Demophon in the fires, thus preventing him from becoming immortal.
• Praxithea (or Phrasithea), daughter of Leos. Along with her sisters, Theope and Eubule, she sacrificed herself in order to save Athens. In another version, their father was the one who offered them up to sacrifice. A precinct called the Leocorium was dedicated to the worship of these three maidens at Athens.
• Praxithea, a Thespian princess as one of the 50 daughters of King Thespius and Megamede or by one of his many wives. When Heracles hunted and ultimately slew the Cithaeronian lion, Praxithea and her other sisters, except for one, all lay with the hero in a night, a week or for 50 days as their father strongly desired. Praxithea bore Heracles a son, Nephus.

In Greek mythology, Phrasimus (Ancient Greek: Φράσιμος) was the Athenian husband of Diogenia, daughter of the river-god Cephisus. The couple had a daughter named Praxithea who married Erechtheus of Athens.

Academus or Academos (/ˌækəˈdiːməs/; Ancient Greek: Ἀκάδημος, romanized: Akádemos), also Hecademus (Ancient Greek: Ἑκάδημος, romanized: Hekádemos), was an Attic hero in Greek mythology. The site of Academus, either a grove or a park, which became known as Akademeia, lies on the Cephissus, six stadia from Athens. He is the namesake of the Academy founded by Plato, who taught his students at the site, and as such of the modern English word academy, signifying an institution of higher learning.

The Xenokrateia Relief is a marble votive offering, dated to the end of the fifth-century BCE. It commemorates the foundation of a sanctuary to the river god Kephisos by a woman named Xenokrateia.

The relief, currently on display at the National Archaeological Museum in Athens (NAMA 2756), was found in Neo Phaliro in 1908, in the area inside the Long Walls, which in Antiquity connected the harbor of Piraeus with Athens proper, around the walls’ intersection point with the bed of the Kephisos river. It is dated on stylistic grounds to 410 BCE, and is made of Pentelic marble, while the pillar on which it stands is made of limestone.