When in another book you read (literally just read this part haha) there is a character named Paul, and you already picture him like Paul McCartney. but then you read this:
"Apparently, his mother had meant to name him after a heroic uncle, a spy supposedly, who died in World War II, but his father, Robbie, meant to name him after Paul McCartney".
This, of course, leads you certainly picture the character like Paul, and be really happy.