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Lieutenant-General Lord Frederick FitzClarence, GCH (9 December 1799 – 30 October 1854) was a British Army officer as well as being the illegitimate third son of King William IV and his mistress, Dorothea Jordan.

Lord Frederick FitzClarence
Lord Frederick FitzClarence.jpg
Lord Frederick FitzClarence
Born9 December 1799
Died30 October 1854(1854-10-30) (aged 54)
AllegianceUnited Kingdom United Kingdom
Service/branchFlag of the British Army.svg British Army
Years of service1814–1854
Commands heldBombay Army
AwardsKnight Grand Cross of the Royal Guelphic Order
Spouse(s)Lady Augusta Boyle
RelationsWilliam IV (father)
Dorothea Jordan (mother)
A bookplate showing the coat of arms of Lord Frederick FitzClarence
Bookplate showing the coat of arms of Lord Frederick FitzClarence. The bookplate reads, "This belonged to my Father when Duke of Clarence and was left to me by the Will of Queen Adelaide"

Military careerEdit

FitzClarence was commissioned as an officer in the British Army in 1814.[1] While a captain in the Coldstream Guards, FitzClarence commanded a small detachment of Guards to act in support of the police with the arrest of the Cato Street conspirators in 1820.[1] The arrest was not straightforward, and a scuffle ensued.[2]

Frederick FitzClarence gained the rank of Colonel in the service of the 36th (Herefordshire) Regiment of Foot.[1] On 24 May 1831 he was granted the rank of a marquess' younger son.[1] Having been invested as a Knight Grand Cross of the Royal Guelphic Order (G.C.H.) that same year, he became Lieutenant-Governor of Portsmouth and General Officer Commanding South-West District in 1847[3] and then Commander-in-Chief of the Bombay Army in 1852.[4] He died in office in October 1854.[1]


On 19 May 1821, he married Lady Augusta Boyle (d. 28 July 1876), the eldest daughter of the 4th Earl of Glasgow. They had two children:

  • Augusta FitzClarence (December 1824 – 18 October 1865)
  • William FitzClarence (b. & d. 1827)



  1. ^ a b c d e Lord Frederick FitzClarence obituary The Gentleman's Magazine, 1855, p.304
  2. ^ Morning Chronicle, Thursday, 24 February 1820, as replicated on A Web of English History
  3. ^ "Final resting place for two horses". Portsmouth News. 21 April 2013. Retrieved 4 December 2014.
  4. ^ The India List and India Office List
Military offices
Preceded by
Sir Hercules Pakenham
GOC South-West District
Succeeded by
Sir George D'Aguilar
Preceded by
Sir John Grey
C-in-C, Bombay Army
Succeeded by
Sir Henry Somerset
Preceded by
Sir Roger Hale Sheaffe, Bt
Colonel of the 36th (Herefordshire) Regiment of Foot
Succeeded by
William Henry Scott
Masonic offices
Preceded by
The Earl of Rothes
Grand Master of the
Grand Lodge of Scotland

Succeeded by
Lord Glenlyon
Honorary titles
Preceded by
The Earl of Munster
Lieutenant of the Tower of London
Succeeded by
John Sulivan Wood