Conversation so far:
Did Son House go to school?
CANNOTANSWER.
Did he get married?
At the age of nineteen, while living in the Delta, he married Carrie Martin, an older woman from New Orleans.
Did they have kids?
After a couple of years, feeling used and disillusioned, House recalled, "I left her.
Did he re marry?
CANNOTANSWER.
Did you learn anything interesting about him?
He found an escape from manual labor when, following a conversion experience ("getting religion") in his early twenties, he was accepted as a paid pastor.

Question: How long was he a pastor?
Self-contained rewrite: How long was Son House a pastor?