Who was the legal grandson of the Earl of Merica?
Ealdgyth, daughter of Earl Ælfgar Ealdgyth ("fl. c". 1057–1066), also Aldgyth or in modern English, Edith, was a daughter of Ælfgar, Earl of Mercia, the wife of Gruffudd ap Llywelyn (d. 1063), ruler of all Wales, and later the wife and queen consort of Harold Godwineson, king of England in 1066. She was described by William of Jumièges as a considerable beauty.
Baron Carteret Baron Carteret is a title that has been created twice in British history, once in the Peerage of England and once in the Peerage of Great Britain. The first creation came into the Peerage of England in 1681 when the fourteen-year-old Sir George Carteret, 2nd Baronet, was made Baron Carteret, of Hawnes in the County of Bedford (now Haynes Park). The peerage was originally proposed for his grandfather Sir George Carteret, 1st Baronet, a celebrated royalist statesman, but he died before he was granted the title and as his eldest son, Philip, predeceased him, it was eventually bestowed on his grandson, George, with remainder to the latter's brothers. The Baronetcy, of Metesches in the Island of Jersey, had been created for George Carteret in the Baronetage of England on 9 May 1645. Lord Carteret married Lady Grace Granville, daughter of John Granville, 1st Earl of Bath. In 1715 Lady Grace was raised to the Peerage of Great Britain in her own right as Viscountess Carteret and Countess Granville (see Earl Granville for a more details on these two peerages). Lord Carteret and Lady Granville were both succeeded by their son John Carteret, the second Baron and second Earl. The titles became extinct on the death of the latter's son Robert Carteret, the third Earl, in 1776.