Lady Augusta Gordon was a British noblewoman. Born the fourth illegitimate daughter of William IV of the United Kingdom by his long-time mistress Dorothea Jordan, she grew up at their Bushy House residence in Teddington. Augusta had four sisters and five brothers all surnamed FitzClarence. Soon after their father became monarch, the FitzClarence children were raised to the ranks of younger children of a marquess.

Wilhelmina FitzClarence, Countess of Munster was a British peeress and novelist. Her mother, Lady Augusta FitzClarence, was an illegitimate daughter of William IV of the United Kingdom; Wilhelmina, also known as Mina, was born the day after William's succession as monarch. She travelled as a young girl throughout Europe, visiting the courts of France and Hanover. In 1855, Mina married her first cousin William FitzClarence, 2nd Earl of Munster; they would have nine children, including the 3rd and 4th Earls of Munster.