Question: What woman, best remembered as the mistress of Lord Nelson and as the muse of George Romney, was the movie That Hamilton Woman, based on?
Context: The Romney family, prominent in U.S. politics and other professions, is most known for its connection with George W. Romney (1907 in Colonia Dublán, Galeana, Chihuahua, Mexico – 1995 at Bloomfield Hills, Michigan), 43rd governor of Michigan (1963–1969) and his son, Mitt Romney (born 1947 in Detroit, Michigan), 70th governor of Massachusetts (2003–2007), and Republican nominee for the presidency of the United States in 2012.  George Romney's father was Gaskell Romney (1871 in St. George, Utah – 1955 in Salt Lake City, Utah), and his mother was Anna Amelia Pratt.  Anna's grandfather was renowned early Mormon leader Parley Parker Pratt. Romney Cottage is an early 18th-century home located in the Ormsgill area of Barrow-in-Furness, Cumbria, England.  Also known as High Cocken it is most noted as being the residence of painter George Romney, an early member of the famed Romney family.  Having been born in nearby Dalton-in-Furness, Romney lived in High Cocken between the ages of 8 and 21 before relocating to Kendal and eventually London.  Romney Cottage was granted Grade II listed status in 1976. Emma, Lady Hamilton (26 April 1765; baptised 12 May 1765 – 15 January 1815), model and actress, is best remembered as the mistress of Lord Nelson and as the muse of George Romney. George Romney (26 December 1734 – 15 November 1802) was an English portrait painter.  He was the most fashionable artist of his day, painting many leading society figures – including his artistic muse, Emma Hamilton, mistress of Lord Nelson. HMS "Lord Nelson" was a "Lord Nelson"-class pre-dreadnought battleship launched in 1906 and completed in 1908.  She was the Royal Navy's last pre-dreadnought.  The ship was flagship of the Channel Fleet when World War I began in 1914.  "Lord Nelson" was transferred to the Mediterranean Sea in early 1915 to participate in the Dardanelles Campaign.  She remained there, becoming flagship of the Eastern Mediterranean Squadron, which was later redesignated the Aegean Squadron.  After the Ottoman surrender in 1918 the ship moved to the Black Sea where she remained as flagship before returning to the United Kingdom in May 1919.  "Lord Nelson" was placed into reserve upon her arrival and sold for scrap in June 1920. Esther Hallam Meynell (née Moorhouse) (1878 in Leeds – 4 February 1955 in Brighton, Sussex), was an English author.  She is best known for her "The Little Chronicle of Magdalena Bach", a fictional autobiography of Anna Magdalena Bach, the wife of composer Johann Sebastian Bach, and "Nelson’s Lady Hamilton", a book about the life of Emma, Lady Hamilton, mistress of Lord Nelson.  There are also many books by her about Sussex, where she lived.  On the other hand, her "Time's Door" belongs to the genre of science fiction due to its theme of time travel.  Meynell was the niece by marriage of the poet and suffragette Alice Meynell. HMS "Agamemnon" was one of two "Lord Nelson"-class pre-dreadnought battleships launched in 1906 and completed in 1908.  She was the Royal Navy's second-to-last pre-dreadnought battleship to be built, followed by her sister ship, "Lord Nelson" .  She was assigned to the Channel Fleet when World War I began in 1914.  The ship was transferred to the Mediterranean Sea with "Lord Nelson" in early 1915 to participate in the Dardanelles Campaign.  She made a number of bombardments against Turkish fortifications and in support of British troops.  "Agamemnon" remained in the Mediterranean after the conclusion of that campaign to prevent the German battlecruiser  and light cruiser "Breslau" from breaking out into the Mediterranean.  "Agamemnon" shot down the German Zeppelin "LZ85" during a bombing mission over Salonica in 1916.  On 30 October 1918, the Ottoman Empire signed the Armistice of Mudros on board the ship while she was anchored at Lemnos in the northern Aegean Sea.  She was converted to a radio-controlled target ship following her return to the United Kingdom in March 1919 and began service in 1921.  "Agamemnon" was replaced by "Centurion" at the end of 1926 and sold for scrap in January 1927, the last pre-dreadnought in service with the Royal Navy. That Hamilton Woman, (also known as Lady Hamilton and The Enchantress), is a 1941 black-and-white historical film drama, produced and directed by Alexander Korda for his British company during his exile in the United States.  Set during the Napoleonic Wars, the film tells the story of the rise and fall of Emma Hamilton, dance-hall girl and courtesan, who married Sir William Hamilton, British ambassador to the Kingdom of Naples.  She later became mistress to Admiral Horatio Nelson. The "Lord Nelson" class was a two-ship class of pre-dreadnought battleships built by the Royal Navy between 1905 and 1908.  Although they were the last British pre-dreadnoughts, both were completed and commissioned after HMS "Dreadnought" had entered service.  "Lord Nelson" and "Agamemnon" were serving in the Channel Fleet when World War I began in 1914.  They were both transferred to the Mediterranean Sea in early 1915 to participate in the Dardanelles Campaign.  They remained there, assigned to the Eastern Mediterranean Squadron, which was later redesignated the Aegean Squadron, to prevent the German battlecruiser  and her consort "Breslau" from breaking out into the Mediterranean.  Both ships returned to the United Kingdom in 1919.  "Lord Nelson" was placed into reserve upon her arrival and sold for scrap in June 1920, but "Agamemnon" was converted into a radio-controlled target ship before being sold for scrap in 1927, the last surviving British pre-dreadnought. Lord Nelson was the lead vocalist for the rap metal band Stuck Mojo.  He joined the group in 2006 after being offered a position to sing and rap for their album "Southern Born Killers".  Real name Lloyd Nelson, the stage name "Lord Nelson" was given to him by Rich Ward on joining Stuck Mojo.  Lord Nelson's final appearance with the band is the 2008 release "The Great Revival".  On January 16, 2012 Lord Nelson released the video "Until I Die" featuring the French band Lies.  Lord Nelson linked up with Lies after the Stuck Mojo Here Comes The Monster European tour and has recorded a solo project "Fight My Struggle Between Heaven and Hell" due out February 27, 2012.
Answer: Emma, Lady Hamilton