March 13, 2012 No Comments FREE St. Patrick’s Day Donut at Thorntons Print out the coupon and redeem for a FREE St. Patrick’s Day Donut at Thorntons. Coupon valid March 13-19, 2012. Locations. FREE St. Patrick’s Day Donut at Thorntons -EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.