When did Margaret Georgiana Spencer's husband die?
John Spencer, 1st Earl Spencer John Spencer, 1st Earl Spencer (19 December 1734 – 31 October 1783) was a British peer and politician.
Mariam Tsitsishvili Mariam (Georgian: მარიამ ციციშვილი ), also known as Maria in European sources, (9 April 1768 – 30 March 1850) was the Queen of Georgia as the second wife and consort of the last King George XII of Georgia (reigned from 1798 to 1800).