Conversation so far:
What are Antecedents for Lewis Carroll?
Dodgson's family was predominantly northern English, with some Irish connections. Conservative and High Church Anglican, most of Dodgson's ancestors were British Army officers or Church of England clergymen.
How many siblings did Lewis Carroll have?
the third child. Eight more were to follow

Question: How many brothers did Dodgson have?
Self-contained rewrite: How many brothers did Lewis Carroll have?