FitzClarence

Fitzclarence or FitzClarence is a pseudo-Anglo-Norman name meaning "son of Clarence"—it usually refers to a bastard son of a Duke of Clarence, or a descendant thereof, and was used by them as a surname.

Bookplate showing the arms granted to the Fitzclarences

The FitzClarence family was an illegitimate branch of the House of Hanover. Prince William, Duke of Clarence, and future king William IV of the United Kingdom, had at least ten children with his mistress Dorothea Jordan, all of whom took the surname FitzClarence. All of whom were also granted by their father the rank of a marquess' younger sons or daughters.

The Duke of Clarence's eldest surviving illegitimate child, George FitzClarence (1794–1842), was created Earl of Munster in 1831 and his male-line was continued until the death of Anthony FitzClarence, 7th Earl of Munster in 2000. Two of Lord Munster's brothers, Frederick and Augustus (a priest), had issue that were also part of the family. Five daughters of William IV and Dorothy Jordan were married with nobles or prominent military figures, including William Hay, 18th Earl of Erroll, Lucius Cary, 10th Viscount Falkland and Admiral Lord John Hallyburton. Only one, Mary, had no children.

• The 10 children of Prince William, Duke of Clarence, future King of Great Britain and his mistress, Dorothy Jordan, and their descendants:
  • George FitzClarence (1794–1842) and his grandson:
    • Charles FitzClarence (1865-1914)
  • Henry FitzClarence (1795–1817)
  • Sophia FitzClarence (1796–1837)
  • Mary FitzClarence (1798–1864)
  • Frederick FitzClarence (1799–1854)
  • Elizabeth FitzClarence (1801–1856)
  • Adolphus FitzClarence (rear admiral) (1802–1856) (no issue)
  • Augusta FitzClarence (1803–1865)
  • Augustus FitzClarence (1805–1854)
  • Amelia FitzClarence (1807–1858)
• William FitzClarence, 2nd Earl of Munster (1824–1901)
• Geoffrey FitzClarence, 3rd Earl of Munster (1859–1902)
• Aubrey FitzClarence, 4th Earl of Munster (1862–1928)
• Geoffrey FitzClarence, 5th Earl of Munster (1906–1975)
• Edward FitzClarence, 6th Earl of Munster (1899–1983)
• Anthony FitzClarence, 7th Earl of Munster (1926–2000)