On December 30, 1816, Percy Bysshe Shelley and Mary Wollenstonecraft Godwin were wed. The two had already run away together in July, 1814, but they couldn't get married because..Percy was already married. Once his wife died, he and Mary tied the knot almost immediately. Though Shelley had been heir to a wealthy relative's estate, he'd been banished from Oxford after refusing to admit authorship of a controversial essay. Thus he and his wife spent most of their time in Europe, dodging creditors.