In his position as British Prime Minister , Pitt , who was unmarried , needed a hostess .
In August 1803 , she moved into the home of her uncle , William Pitt the Younger , to manage his household and act as his hostess .
In William Pitt the Younger 's position as British Prime Minister William Pitt the Younger Pitt , who was unmarried , needed a hostess .
In August 1803 , she moved into the home of her uncle , William Pitt the Younger , to manage his household and act as his hostess .