Frances Anne Vane, Marchioness of Londonderry

The Most Honourable The Marchioness of Londonderry
The engagement painting of Lady Frances Anne Vane-Tempest by Sir Thomas Lawrence, 1818
Personal details
Born	17 January 1800 St James's Square, London, England
Died	20 January 1865 Seaham Hall, County Durham, England
Nationality	English
Spouse(s)	Charles Vane, 3rd Marquess of Londonderry (1778–1854)
Children	George Vane-Tempest, 5th Marquess of Londonderry (1821-1884) Frances Anne Churchill, Duchess of Marlborough (1822–1899) Lady Alexandrina Octavia Maria Vane (1823–1874) Lord Adolphus Vane-Tempest (1825–1864) Lady Adelaide Emelina Caroline Vane (c.1830–1882) Lord Ernest McDonnell Vane-Tempest (1836–1885)
Parents	Sir Henry Vane-Tempest, 2nd Bt (1771–1813) and Anne MacDonnell, Countess of Antrim (1778–1834)

Frances Anne Vane, Marchioness of Londonderry (17 January 1800 – 20 January 1865) was a wealthy English heiress and noblewoman. She was the daughter of Sir Henry Vane-Tempest, 2nd Baronet and the second wife of Charles Vane, 3rd Marquess of Londonderry. Through her daughter, Lady Frances Vane, wife of John Churchill, 7th Duke of Marlborough, she was the great-grandmother of Sir Winston Churchill.

Frances Anne inherited extensive lands from her father in north east England. Her mother was Anne MacDonnell, 2nd Countess of Antrim. With her husband, she developed an extensive coal mining operation that included coal mines, a railroad, and docks at Seaham.

She became an object of affection for the Tsar Alexander I of Russia after he saw her portrait.

She sought to promote her eldest son's political career and was a patron of Benjamin Disraeli.

Frederick William Robert Stewart, 4th Marquess of Londonderry (1805–1872) was her stepson.