Amelia Osborne, Marchioness of Carmarthen
Amelia Osborne Marchioness of Carmarthen and de jure 12th Baroness Darcy de Knayth and 9th Baroness Conyers and 5th Countess of Mértola (12 October 1754 – 27 January 1784) was a British peeress
The Peerage is a legal system of largely hereditary titles in the United Kingdom, which constitute the ranks of British nobility and is part of the British honours system...

 and a Portuguese countess.

Amelia was the only child of the Robert Darcy, 4th Earl of Holderness
Robert Darcy, 4th Earl of Holderness
Robert Darcy, 4th Earl of Holderness PC , known before 1721 as Lord Darcy and Conyers, was a British diplomat and politician. From 1744 to 1746 he was ambassador at Venice and from 1749 to 1751 he represented his country at The Hague...

 and his wife, Mary. On 29 November 1773, she married Francis Osborne, Marquess of Carmarthen
Francis Osborne, 5th Duke of Leeds
Francis Godolphin Osborne, 5th Duke of Leeds KG, PC , styled Marquess of Carmarthen until 1789, was a British politician...

 and they had three children:
  • Lord George William Frederick Osborne
    George Osborne, 6th Duke of Leeds
    George William Frederick Osborne, 6th Duke of Leeds KG, PC , styled Earl of Danby until 1789 and Marquess of Carmarthen from 1789 to 1799, was a British peer and politician...

     (21 July 1775 – 10 July 1838), later 6th Duke of Leeds; married Lady Charlotte Townshend, daughter of the 1st Marquess Townshend
    George Townshend, 1st Marquess Townshend
    Field Marshal George Townshend, 1st Marquess Townshend, PC , known as The Viscount Townshend from 1764 to 1787, was a British soldier who reached the rank of field marshal.-Early life:...

    , on 17 August 1797 and had issue.
  • Lady Mary Henrietta Juliana Osborne (1776 - 1862); married Thomas Pelham, 2nd Earl of Chichester
    Thomas Pelham, 2nd Earl of Chichester
    Thomas Pelham, 2nd Earl of Chichester PC, PC , FRS , styled The Honourable Thomas Pelham from 1768 until 1783, The Right Honourable Thomas Pelham from 1783 to 1801, and then known as Lord Pelham until 1805, was a British Whig politician...

     (28 April 1756 – 4 July 1826) in 1801 and had issue.
  • Lord Francis Osborne
    Francis Osborne, 1st Baron Godolphin
    Francis Godolphin Osborne, 1st Baron Godolphin , styled Lord Francis Osborne from 1789 to 1832, was a British politician.-Background:...

     (18 October 1777 – 15 February 1850), later 1st Baron Godolphin; married The Hon. Elizabeth Eden, third daughter of the 1st Baron Auckland, on 31 March 1800 and had issue.

Lord and Lady Carmarthen divorced in May 1779 and a month later, Amelia then married John "Mad Jack" Byron (father of the poet, Lord Byron
George Gordon Byron, 6th Baron Byron
George Gordon Byron, 6th Baron Byron, later George Gordon Noel, 6th Baron Byron, FRS , commonly known simply as Lord Byron, was a British poet and a leading figure in the Romantic movement...

) and they had one daughter, Augusta Leigh
Augusta Leigh
Augusta Maria Byron, later Augusta Maria Leigh , styled "The Honourable" from birth, was the only daughter of John "Mad Jack" Byron, the poet Lord Byron's father, by his first wife, Amelia Osborne .-Early...

. A year earlier, Amelia had inherited the right to her father's baronies of Darcy de Knayth
Baron Darcy de Knayth
Baron Darcy de Knayth is a title in the Peerage of England. It was created in 1332 for John Darcy. At the death of the sixth baron, the barony fell into abeyance, which the Sovereign terminated in 1641 in favour of Conyers Darcy. The next baron, also named Conyers, was granted the title of Earl of...

 and Conyers
Baron Conyers
The title Baron Conyers was created in the Peerage of England on 17 October 1509 for William Conyers, the son-in-law of William Neville, 1st Earl of Kent. The abeyance after the death of the 3rd baron was terminated for the 7th Baron Darcy de Knayth, these baronies were held together until the...

 (although this wasn't confirmed until 1798, long after her death) and also inherited the Portuguese countship of Mértola from him. On her own death in 1784, they were inherited by her eldest son, George.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.