Life of Brian” is episode 06 of family guy season 12. It was originally aired on November 24, 2013.

When Stewie and Brian travel back to 17th Century Jamestown, via Stewie’s time machine, they encounter too many close calls with altering the course of mankind. Stewie decides to destroy his time machine, but immediately regrets his decision when an unthinkable event happens, and he is unable to go back in time.