Lady Mary Fox Lady Mary Fox Lady Mary Fox (née FitzClarence; 19 December 1798 – 13 July 1864) was an illegitimate daughter of King William IV of the United Kingdom by his mistress Dorothea Jordan. In later life she became a writer. Mary FitzClarence was born in Bushy House as the fourth child and second daughter of the then Prince William, Duke of Clarence, and his companion Dorothea Jordan. She was "a fine looking, brown girl with a pleasant countenance and manners". In 1820, her younger sister Elizabeth was courted by Charles Richard Fox, the eldest but illegitimate son of Lord and Lady
Dorothea Jordan illegitimate children: She left him to begin her affair with the Duke of Clarence, once she realized that Ford was never going to marry her. Jordan's children were placed under the care of her sister Hester, who moved with them to a house in Brompton. By a settlement dated 4 November 1791, Jordan transferred all her savings to Ford and Hester for the maintenance and education of the children; in addition, she allowed them an annual payment and granted Hester an allowance for her services. Pretty, witty and intelligent, Jordan soon came to the attention of wealthy men. She became