All ages.
John Lennon died at age 40.
Julian Lennon was only 5 when John left.
John Lennon's mother died in 1958 at the age of 44. John Lennon died in 1980.
at the age of 15
At age 5.
He joined the beatles
Yes.
John, moved in with his aunt Mimi at the age of four.
From Age 5, Until 1962.
The singer John Lennon, formerly part of Beatles was shot outside of his house in 1980 at the age of 40.
He was 22 when he had Julian and 35 when he had Sean.
He got married at age 21 to Cynthia and later at age 28 to Yoko.