Conversation so far:
Where was Seth MacFarlane born?
Kent, Connecticut, U.S.
Who was Seth MacFarlane's father?
Ronald Milton MacFarlane
Who was Seth MacFarlane's mother?
Ann Perry (née Sager)
Where did Seth MacFarlane go to school?
MacFarlane received his high school diploma in 1991 from the Kent School.

Question: Did he have any brothers or sisters?
Self-contained rewrite: Did Seth MacFarlane have any brothers or sisters?