High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Sean Taro Ono Lennon (born October 9, 1975) is an American singer, songwriter, musician, guitarist and actor. He is the son of John Lennon and Yoko Ono. Sean Lennon was born in New York City on October 9, 1975, his father's 35th birthday. Julian Lennon and Kyoko Chan Cox are his half-siblings. After Sean's birth, John became a house husband, doting on his young son until his murder in 1980. Sean was educated at the exclusive private boarding school Institut Le Rosey in Rolle, Switzerland and earlier at New York's private Ethical Culture Fieldston School and Dalton School. He later attended Columbia University, though only for three semesters before dropping out to focus on his music career.