Amelia Byron, Baroness Conyers, 12th Baroness Darcy de Knayth, 9th Baroness Conyers, 5th Countess of Mértola (néeLady Amelia Darcy; 12 October 1754 – 27 January 1784), known as the Marchioness of Carmarthen from 1773–9, was a British peer and a Portuguese countess. She is best known for eloping with John "Mad Jack" Byron, father of Lord Byron.
Lord Francis Godolphin Osborne (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.
In early 1777, Lady Amelia's mother, Lady Holderness, broke off relations with her daughter after the Carmarthens gave shelter to Richard Glover (son of the poet), a friend of Lord Carmarthen, when he eloped with one of the daughters of Solomon Dayrolles.[3]
On 16 May 1778, as the only surviving child of her father, Lady Amelia succeeded de jure to the titles of 12th Baroness Darcy de Knayth and 9th Baroness Conyers in her own right, and to the Portuguese countship of Mértola. Her right to the baronies of Darcy de Knayth and Conyers was eventually confirmed in 1798, long after her death.
Affair with "Mad Jack" Byron
In December 1778, Lady Carmarthen's marriage ended when she ran off with Captain John "Mad Jack" Byron.[4] The previous month, Byron visited her at home in Grosvenor Square when her husband was absent, and they began an affair.[5][6] Lord and Lady Carmarthen were divorced on 31 May 1779.[4] Almost immediately after the divorce, Lady Conyers, as she was styled, married Byron. They had three children:
Hon. Sophia Georgina Byron (18 July 1779[7] – died aged two months; buried at Twickenham on 18 September 1779).[8]
A year after the birth of the last child, Lady Conyers died following a lingering illness at her home at Upper Brook Street, Mayfair.[9] Her titles were inherited by her eldest son, George. By his second wife, her widower became the father of the poet, Lord Byron.[10]
^L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 174.