 Until the late 20th century , Wollstonecraft 's life , which encompassed several unconventional personal relationships , received more attention than her writing . After two ill @-@ fated affairs , with Henry Fuseli and Gilbert Imlay ( by whom she had a daughter , Fanny Imlay ) , Wollstonecraft married the philosopher William Godwin , one of the forefathers of the anarchist movement . Wollstonecraft died at the age of 38 , eleven days after giving birth to her second daughter , leaving behind several unfinished manuscripts . This daughter , Mary Wollstonecraft Godwin , became an accomplished writer herself , as Mary Shelley , the author of Frankenstein . 
