 Mary Godwin may have first met the radical poet @-@ philosopher Percy Bysshe Shelley in the interval between her two stays in Scotland . By the time she returned home for a second time on 30 March 1814 , Percy Shelley had become estranged from his wife and was regularly visiting Godwin , whom he had agreed to bail out of debt . Percy Shelley 's radicalism , particularly his economic views , which he had imbibed from William Godwin 's Political Justice ( 1793 ) , had alienated him from his wealthy aristocratic family : they wanted him to follow traditional models of the landed aristocracy , and he wanted to donate large amounts of the family 's money to schemes intended to help the disadvantaged . Percy Shelley therefore had difficulty gaining access to money until he inherited his estate , because his family did not want him wasting it on projects of " political justice " . After several months of promises , Shelley announced that he either could not or would not pay off all of Godwin 's debts . Godwin was angry and felt betrayed . 
