Pausanias Description of Greece 1.21.4

[4]
  On the way to the Athenian Acropolis from the theater is the tomb of Calos. Daedalus murdered this Calos, who was his sister's son and a student of his craft, and therefore he fled to Crete ; afterwards he escaped to Cocalus in Sicily . The sanctuary of Asclepius is worth seeing both for its paintings and for the statues of the god and his children. In it there is a spring, by which they say that Poseidon's son Halirrhothius deflowered Alcippe the daughter of Ares, who killed the ravisher and was the first to be put on his trial for the shedding of blood.

[4] On the way to the Athenian Acropolis from the theater is the tomb of Kálōs. Daidalos killed this Kálōs, who was his sister’s son and a learner of the craft [ tekhnē]. Because of this he fled to Crete; afterwards he ran off to the residence of Kokalos in Sicily. The sanctuary [ hieron] of Asklepios is worthy of viewing [ théā] both for its paintings [ graphai] and for the statues [ agalmata] of the god and his children. In it there is a spring [ krēnē], at which they say that Poseidon’s son Halirrhothios ravished Alkippe the daughter of Ares, who killed the ravisher and was the first to be put on trial [ dikē] in-compensation-for [ epi+ dative] the killing [ phonos].