On 21 December 1801, when Fanny was seven, Godwin married Mary Jane Clairmont, a neighbour with two children of her own: three-year-old Claire and six-year-old Charles. She had never been married and was looking, like Godwin, for financial stability. Although Clairmont was well-educated and well-travelled, most of Godwin's friends despised her, finding her vulgar and dishonest. They were astonished that Godwin could replace Mary Wollstonecraft with her. Fanny and her half-sister Mary disliked their stepmother and complained that she preferred her own children to them. On 28 March 1803, baby William was born to the couple.