Matricide is the act of killing one's own mother.
Orestes Pursued by the Furies by William-Adolphe Bouguereau. Orestes is tormented by the Furies for the murder of his mother Clytemnestra.
In Greek mythology, Orestes or Orestis was the son of Clytemnestra and Agamemnon, and the brother of Electra. He is the subject of several Ancient Greek plays and of various myths connected with his madness and purification, which retain obscure threads of much older ones.
Orestes at Delphi flanked by Athena and Pylades among the Erinyes and priestesses of the oracle, perhaps including Pythia behind the tripod – Paestan red-figured bell-krater, c. 330 BC
Orestes and Iphigeneia on an antique mosaic, Musei Capitolini
Orestes, Elektra, and Pylades at the tomb of Agamemnon - Campanian red-figure hydria, c. 330 BC
Orestes Pursued by the Furies by William-Adolphe Bouguereau