In Greek mythology, Aegisthus (Ancient Greek: Αίγισθος, "goat strength" — also transliterated as Aegisthos or Aigísthos) was the son of Thyestes and of his daughter, Pelopia. Thyestes felt he'd been deprived of the Mycenean throne unfairly by his brother, Atreus. The two battled back and forth several times. In addition, Thyestes had an affair with Atreus' wife, Aerope. In revenge, Atreus killed Thyestes' sons and served them to him unknowingly… (More on Aegistheus)