On 21 Feb 1759 [her father] John Murray 4th Earl Dunmore (age 29) and [her mother] Charlotte Stewart Countess Dunmore (age 29) were married. She the daughter of Alexander Stewart 6th Earl Galloway (age 65) and Catherine Cochrane Countess Galloway (age 50). He the son of William Murray 3rd Earl Dunmore.

On 29 Sep 1791 [her future brother-in-law] Prince Frederick Hanover Duke York of York (age 28) and Frederica Charlotte Hohenzollern (age 24) were married at Charlottenburg, Berlin. She the daughter of Frederick William II King Prussia (age 47) and Crown Princess Elisabeth Christine of Prussia (age 44). He the son of King George III of Great Britain and Ireland (age 53) and Charlotte Mecklenburg Strelitz Queen Consort England (age 47). They were third cousins. She a great x 2 granddaughter of King George I of Great Britain and Ireland.

On 04 Apr 1793 Prince Augustus Frederick Hanover 1st Duke Sussex (age 20) and Augusta Murray Duchess Sussex (age 25) were married at Rome, Italy in secret contrary to the Royal Marriages Act which required him to seek permission before marrying. She the daughter of John Murray 4th Earl Dunmore (age 63) and Charlotte Stewart Countess Dunmore (age 63). He the son of King George III of Great Britain and Ireland (age 54) and Charlotte Mecklenburg Strelitz Queen Consort England (age 48).

In Aug 1794 Prince Augustus Frederick Hanover 1st Duke Sussex (age 21) and Augusta Murray Duchess Sussex (age 26) marriage annulled by the Court of Arches which deemed the marriage contrary to the Royal Marriages Act. The couple continued to live together until 1801 when they separated. She received a grant of £4000 each year and custody of their children.

On 18 May 1797 King Frederick Wilhelm Karl Württemberg (age 42) and [her illegitimate sister-in-law] Princess Charlotte Hanover (age 30) were married. She the illegitmate daughter of King George III of Great Britain and Ireland (age 58) and Charlotte Mecklenburg Strelitz Queen Consort England (age 52). They were third cousins. He a great x 2 grandson of King George I of Great Britain and Ireland.

On 02 May 1831 [her former husband] Prince Augustus Frederick Hanover 1st Duke Sussex (age 58) and Cecilia Gore aka Underwood Duchess of Inverness (age 46) were married contrary to the Royal Marriages Act. On the same day she assumed the surname Underwood by Royal Licence. She did not assume the title Duchess of Sussex. She the daughter of Arthur Saunders Gore 2nd Earl Arran and Elizabeth Underwood Countess of Arran. He the son of King George III of Great Britain and Ireland and Charlotte Mecklenburg Strelitz Queen Consort England.