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.
Henry Howard, 5th Earl of Suffolk Henry Howard, 5th Earl of Suffolk (18 July 1627 – 10 December 1709) was the youngest son of Theophilus Howard, 2nd Earl of Suffolk, but inherited the title, because none of his brothers left surviving sons.