ÆGISTHUS, in ancient history, was the son of Thyestes by his own daughter Pilopeia, who, to conceal her shame, exposed him in the woods: some say he was taken up by a shepherd, and suckled by a goat, whence he was called Ægisthus. He corrupted Cly-
Ægithalus temnestra the wife of Agememnon; and with her assistance slew her husband, and reigned seven years in Mycenæ. Her was, together with Clytemnestra, slain by Orestes. Pompey used to call Julius Cæsar Ægithus, on account of his having corrupted his wife Mutia, whom he afterwards put away, though he had three children by her.