Louisa married George John Montagu on 9 Jul 1804 in Middlesex, England. George (son of John Montagu and Mary Henrietta Paulet) was born on 4 February 1773 in Huntingdon, Huntingdonshire District, Cambridgeshire, England; died on 21 May 1818 in Rome, Provincia di Roma, Lazio, Italy; was buried in Barnwell, East Northamptonshire Borough, Northamptonshire, England. [Group Sheet] [Family Chart]

1. Lady Harriet Mary Montagu was born on 14 May 1805 in London, England; died on 4 May 1857 in Paris, Paris, Île-de-France, France.
2. Catherine Caroline Montagu was born on 7 Oct 1808 in London, London, England; died on 30 Apr 1834 in Paris, Paris, Ile-de-France, France; was buried on 13 May 1834 in Barnwell, Northamptonshire, England.
3. John William (7th Earl of Sandwich ) Montagu was born on 8 Nov 1811 in Grafton Place, London, England; died on 3 Mar 1884 in Huntingdon, England.