Oedipus was the son of Laius. The Delphic oracle foretold that Laius would be killed by his son, so
Oedipus was abandoned on mountCithaeron with a nail through his feet. However, he was found by a shepherd and raised by Polybus. Hearing that he would kill his father, Oedipus left Corinth and met Laius on his travel. He killed him in an argument not knowing who he was. Research Oedipus