Sarah, Duchess of York Society at a congressional briefing. Sarah, Duchess of York, was a founding supporter of the American Cancer Society's Great American Weigh In, an annual campaign (modelled after the Society's Great American Smoke Out) aimed at raising awareness of the link between excess weight and cancer. In 2006, the Duchess established The Sarah Ferguson Foundation based in Toronto, which derives funds from Sarah's commercial work and private donations with the aim of supporting charities internationally that serve children and families in dire need. Included under this umbrella organisation is her patronage and support of several British charities, including Mental Disability Rights
Sarah Churchill, Duchess of Marlborough offer financially, as his estates were deeply in debt. Sarah had a rival for Churchill in Catherine Sedley, a wealthy mistress of James II and the choice of Churchill's father, Sir Winston Churchill, who was anxious to restore the family's fortune. John may have hoped to take Sarah as a mistress in place of the Duchess of Cleveland, who had recently departed for France, but surviving letters from Sarah to John show her unwillingness to assume that role. In 1677, Sarah's brother Ralph died, and she and her sister, Frances, became co-heirs of the Jennings estates in Hertfordshire and Kent.