Yoko Ono Lennon (/ˈoʊnoʊ/ OH-noh; Japanese: 小野 洋子, romanized: Ono Yōko, usually spelled in katakana オノ・ヨーコ; born February 18, 1933) is a Japanese multimedia artist, singer, songwriter and peace activist. Her work also encompasses performance art, which she performs in both English and Japanese, and filmmaking. She was married to English singer-songwriter John Lennon of the Beatles from 1969 until his murder in 1980. Ono grew up in Tokyo and moved to New York in 1953 to live with her family. She became involved in New York City's downtown artists scene, which included the Fluxus group. With their performance Bed-Ins for Peace in Amsterdam and Montreal in 1969, Ono and Lennon used their honeymoon at the Hilton Amsterdam as a stage for public protests against the Vietnam War. The feminist themes of her music have influenced musicians as diverse as the B-52s and Meredith Monk. She achieved commercial and critical acclaim in 1980 with the chart-topping album Double Fantasy, a collaboration with Lennon that was released three weeks before his murder, winning the Grammy Award for Album of the Year.

Sean Taro Ono Lennon (Japanese: 小野 太郎, Hepburn: Ono Tarō, born October 9, 1975) is a British-American musician, songwriter, producer and multi-instrumentalist. He is the son of John Lennon and Yoko Ono, and half-brother to Julian Lennon. Over the course of his career, he has been a member of the bands Cibo Matto, the Ghost of a Saber Tooth Tiger, the Claypool Lennon Delirium and his parents' group the Plastic Ono Band. He has released two solo albums: Into the Sun (1998) and Friendly Fire (2006). He has produced numerous albums for various artists, including Black Lips, and the Plastic Ono Band. Sean Lennon was born at New York–Presbyterian Hospital in New York City on October 9, 1975, his father's 35th birthday. He is of Japanese descent on his mother's side and English, Welsh and Irish descent on his father's side. Julian Lennon is his half-brother. Elton John is his godfather. After Sean's birth, John Lennon became a house husband, caring for his young son until his murder on December 8, 1980. Sean attended kindergarten in Tokyo and, at his request, 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 attended Columbia University for three semesters, majoring in anthropology before dropping out to focus on his music and tour with his mother.