Conversation so far:
Where did Bernie Leadon grow up?
Bernie Leadon was a teen when his family moved to San Diego.
Who were Bernie Leadon's parents?
His parents were Dr. Bernard Leadon, Jr. and Ann Teresa Sweetser.
Who was Bernie Leadon's mother?
His mother was Ann Teresa Sweetser.

Question: Did he have any siblings?
Self-contained rewrite: Did Bernie Leadon have any siblings?