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.
George Leslie, 2nd Earl of Rothes George Leslie, 2nd Earl of Rothes (died 1513) was a Scottish peer. He was the son of Andrew Leslie, Master of Rothes and Marjorie Sinclair (dau of William Sinclair, 1st Earl of Caithness), and the grandson of George Leslie, 1st Earl of Rothes.