Conversation so far:
Did Son House go to school?
Did Son House get married?
At the age of nineteen, while living in the Delta, Son House married Carrie Martin, an older woman from New Orleans.
Did Son House and his wife have kids?
Son House recalled, I left her hanging on the gatepost, with her father tellin' me to come back so we could plow some more.“
Did Son House re marry after leaving his first wife?
Son House married five times.
Did you learn anything interesting about Son House?
Following a conversion experience in his early twenties, Son House was accepted as a paid pastor.
How long was Son House a pastor?
Son House fell into habits which conflicted with his calling. This led him after several years of conflict to leave the church, although continued to preach from time to time.
What did Son House do after being a pastor?
In 1927, at the age of 25, Son House underwent a change of musical perspective.
Did Son House do anything else, after getting interested in music?
Around 1927 or 1928, a man went on a shooting spree, and Son House allegedly shot the man dead. House received a 15-year sentence at the Mississippi State Penitentiary.

Question: What did he do there?
Self-contained rewrite: What did Son House do at the Mississippi State Penitentiary?