Conversation so far:
Where did Billy grow up?
Glendale Heights, Illinois.
Where did he attend school?
Marquardt Middle School.
Did Billy attend college or did he just go out to start a career in music?
Despite grant and scholarship offers from a number of schools, and a tuition fund left by his grandmother, Corgan decided to pursue music full-time.

Question: Was he the only child or did he have siblings?
Self-contained rewrite: Was Billy the only child or did he have siblings?