Orestes, the son of Agamemnon, was a figure in Greek mythology. He was the son of Agamemnon and Clytemnestra, and the brother of Iphigenia and Electra. Pelops, another son of Agamemnon, was a king of the city of Pisa in the Peloponnese region of Greece. He was the father of Atreus, Thyestes, and Hippodamia. Both Orestes and Pelops were important figures in Greek mythology and were connected to the House of Atreus.