Conversation so far:
Are there any other interesting aspects about Charlie Chaplin?
There is no official record of Charlie Chaplin's birth, although Chaplin believed he was born at East Street, Walworth, in South London.
What was Charlie Chaplin's full name?
Charles Spencer Chaplin was Charlie Chaplin's full name.

Question: How many siblings did Charles have?
Self-contained rewrite: How many siblings did Charlie Chaplin have?