(Παγκράτις or Παγκρατώ), a daughter of Aloeus and Iphimedeia, in the Phthiotian Achaia. Once when Thracian pirates, under Butes, invaded that district, they carried off from Mount Drius the women who were solemnizing a festival of Dionysus. Among them was Iphimedeia and her daughter Pancratis. They were carried to Strongyle or Naxos, where king Agassamenus made Pancratis his wife, after the two chiefs of the pirates, Sicelus and Hecetorus (or Scellis and Cassamenus), who were likewise in love with her, had killed each other. Otus and Ephialtes, the brothers of Pancratis, in the meantime came to Strongyle to liberate their mother and sister. They gained the victory, but Pancratis died. (Diod. 5.50, &c.; Parthen. Erot. 19.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890