Pallakai was the general name given to concubines in ancient Greece.
Mosaic from Antioch depicting a scene from the play Perikeiromene. The woman to the left is identified as Glykera, the pallake of the man in the middle, Polemon. The man to the right is a household slave, Sosias.
In Greek mythology, Cassandra, also spelled Kassandra or Casandra, was a Trojan priestess dedicated to the god Apollo and fated by him to utter true prophecies, but never to be believed. Cassandra liv
Pallake
…usually have been a captive of war. These women were allowed to be bought or sold just as any other slave in the Greek world. In Aeschylus' Agamemnon, Cassandra plays the role of an enslaved pallake, captured at Troy and brought home to Agamemnon's palace as his mistress, where they both are killed by Clytemnestra…
Ajax pulling Cassandra, tondo of a red-figure cup by the Kodros Painter [el], c. 440 BC.
Ajax the Lesser drags Cassandra from Palladium before eyes of Priam, Roman mural from the Casa del Menandro, Pompeii
Woodcut illustration of Cassandra's prophecy of the fall of Troy (left) and her death (right), from Giovanni Boccaccio's De mulieribus claris, printed by Johann Zainer [de] at Ulm ca. 1474.
"Cassandra and Ajax" depicted on a terracotta amphora, circa 450 BC.