Margaret Erskine of Dun

On 1 June 1793, she married Archibald Kennedy, Lord Kennedy, who the following year succeeded as 12th Earl of Cassilis. Margaret inherited the House of Dun, a Georgian house, in 1824, and achieved the rank of Marchioness when her husband was created Marquess of Ailsa in 1831. Together, they had six children:^[4][5]

• Archibald Kennedy, Earl of Cassilis (1794–1832), who married Eleanor Allardyce, daughter and heiress of Alexander Allardyce of Dunnottar, Kincardine,^[6] and predeceased both of his parents.^[7]
• Lady Anne Kennedy (1797–1877), who married Sir David Baird, 2nd Baronet.^[8]
• Lady Mary Kennedy (1799–1886), who married Richard Oswald, son of Richard Alexander Oswald, MP for Ayr of Auchincruive Estate.
• Lady Margaret Kennedy (1800–1889), who married Thomas Radclyffe-Livingstone-Eyre.^[9]
• Hon. John Kennedy-Erskine (1802–1831), who assumed the additional name of Erskine after inheriting the Dun estate from his aunt Alicia Erskine in 1824; he married Lady Augusta FitzClarence, an illegitimate daughter of King William IV and Dorothea Jordan in 1827.^[10]
• Lady Alicia Jane Kennedy (1805–1887), who married Jonathan Peel, Secretary of State for War.^[11]

Lord Ailsa died in 1846 and was succeeded in his titles by their grandson, Archibald. Lady Ailsa died on 5 January 1848.

Through her eldest son Archibald, she was a grandmother of nine, including Archibald Kennedy, 2nd Marquess of Ailsa.^[12]

Through her second son John, she was a grandmother of three, Capt. William Henry Kennedy-Erskine of the 17th Lancers;^[12] Wilhelmina "Mina" Kennedy-Erskine (who married his first cousin, William FitzClarence, 2nd Earl of Munster);^[12] and Augusta Anne "Millicent" Mary Kennedy-Erskine (who married James Hay Erskine-Wemyss, son of Rear-Admiral James Erskine Wemyss).^[12]

Margaret Erskine of Dun is the title given to the painting by William Owen which can be found on the first floor of Culzean Castle.^{[citation needed]}