Step 1 : Introduction to the question "What did John Lennon formally change his middle name to in 1969?"
...After John Lennon married Yoko Ono in 1969, he formally changed his middle name. Lennon updated his middle name by deed poll from Winston to “Ono”, during a brief ceremony on the roof of the Apple Corps building in London. Lennon had never liked his middle name, which had been given to him during a bout of wartime patriotism. Although he used the name John Ono Lennon thereafter, official documents referred to him as John Winston Ono Lennon, since UK law dictates that a person is unable to fully revoke a name given at birth.
