Conversation so far:
who is julian lennon?
Lennon's first son Julian.
when was he born?
Julian was born on 8 April 1963.
who was his mother?
Julian's birth, like his mother Cynthia's marriage to Lennon, was kept secret.
were was he born?
CANNOTANSWER.
did he play any instruments?
Lennon gave him a drumming part on a Walls and Bridges track.
He bought Julian a Gibson Les Paul guitar.
did he like music?
encouraged his interest in music by demonstrating guitar chord techniques.

Question: what was he likeas a child?
Self-contained rewrite: What was Julian Lennon like as a child?