Conversation so far:
Where was Andrew Johnson born?
Andrew Johnson was born in Raleigh, North Carolina.
who were Andrew Johnson's parents?
Andrew Johnson was born to Jacob Johnson and Mary (Polly) McDonough.
what is Andrew Johnson's birth date?
Andrew Johnson was born on December 29, 1808.
Did Andrew Johnson have any siblings?
Andrew Johnson had a brother William, four years his senior, and an older sister Elizabeth.

Question: What did his parents do?
Self-contained rewrite: What did Andrew Johnson's parents do?