Agamemnon and Clytemnestra were married. Agamemnon was told that is he sacrificed his daughter Iphigeneia to Artemis, wind would come and his ships would sail to troy. While Agamemnon was at Troy, Clytemnestra had a love affair with Aegisthus, the cousin of Agamemnon. Aegusthus and Clytemnestra had a daughter Erigone. When Agamemnon returned home from Troy he was murdered by Clytemnestra. Aegisthus replaced Agamemnon as king and a few years later Clytemnestra was murdered by her own son, Orestes.
^^a picture of Clytemnestra