Joseph Addison also wrote a play entitled "Cato" in 1713, but it did not inspire followers. "Cato" concerned the Roman statesman who opposed Julius Caesar. The year of its première is important for understanding why the play is unique, for Queen Anne was seriously ill at the time, and both the Tory ministry of the day and the Whig opposition (already led by Robert Walpole) were concerned about the succession. Both groups were in contact with Anne's exiled brother James Francis Edward Stuart. Londoners sensed this anxiety, for Anne had no surviving children; all of the closest successors in the Stuart family were Roman Catholic. Therefore, the figure of Cato was a transparent symbol of Roman integrity. The Whigs saw in him a Whig refusal to accept an absolute monarch from the House of Stuart, while the Tories saw in him a resistance to rule by a triumphant general (John Churchill, the Duke of Marlborough, whose wife Sarah was rumored to control Anne). Further, Cato's claim that Caesar profited by illegal war echoed the Tory accusations against Marlborough. Both sides cheered the play, even though Addison was himself clearly Whig and had meant the play as something near propaganda. John Home's play "Douglas" (1756) would have a similar fate to "Cato" in the next generation after the Licensing Act.