The footprints turn out to be those of Mary's undisclosed true fiancé, Goyles, a Socialist agitator considered "an unsuitable match" by her family, who had secretly entered the grounds for a pre-arranged rendezvous at 3am, when the couple had intended to elope.
The footprints turn out to be those of Mary's undisclosed true fiancé. Mary's undisclosed true fiancé is Goyles. Goyles is a Socialist agitator. This Socialist agitator is considered "an unsuitable match" by her family. The couple had intended to elope. Her family had secretly entered the grounds for a pre-arranged rendezvous at 3am.