In June 1553, Edward VI wrote his will, nominating Jane and her male heirs as successors to the Crown, in part because his half-sister Mary was Roman Catholic, while Jane was a committed Protestant and would support the reformed Church of England, whose foundation Edward claimed to have laid.

Edward's mother was Henry VIII's third wife, Jane Seymour, who died 12 days after his birth on 12 October 1537. Mary I of England had died without managing to have her preferred successor and first cousin, Margaret Douglas, Countess of Lennox, nominated by parliament.Margaret Douglas was a daughter of Margaret Tudor, and lived to 1578, but became a marginal figure in discussions of the succession to Elizabeth I, who at no point clarified the dynastic issues of the Tudor line.
The only son of King Henry VIII from his third wife Jane Seymour, Edward’s accession as next King of England was obvious right from the time of his birth, surpassing his half-sisters, Mary and Elizabeth. The eldest son of Prince Albert and Queen Victoria, the future Edward VII was born Albert Edward on November 9, 1841. Edward VIII (Edward Albert Christian George Andrew Patrick David; later The Duke of Windsor; 23 Jun 1894 - 28 May 1972; 77 yrs) was King of the United Kingdom and the Dominions of the British Commonwealth, and Emperor of India, from 20 Jan to 11 Dec 1936. Because of his mother’s long reign, he spent most of his life performing only ceremonial duties and living a life of leisure. Edward's father died in 1547 when he was only nine years old. King Edward VI served as the King of England for six years, from 1547 until his death in 1553. The Duke of Northumberland was executed, but the Lady Jane and her father were originally spared.

By the terms of Henry VIII’s will, his eldest daughter, Mary, was next in line of succession. United Kingdom - United Kingdom - Edward VI (1547–53): Henry was succeeded by his nine-year-old son, Edward VI, but real power passed to his brother-in-law, Edward Seymour, earl of Hertford, who became duke of Somerset and lord protector shortly after the new reign began. Henry VIII married six times, and two of his wives were executed for treason.

When Henry VIII died in 1547, he was succeeded by his 9 year old son, Edward VI. Because of Edward's age, his uncle Edward Seymour (Duke of Somerset) made himself protector and took control. Henry VIII inherited the throne from his father, Henry VII, who founded the Tudor dynasty. By spring of 1553, it was clear Edward VI was dying.
Edward VII, born Prince Albert Edward (November 9, 1841–May 6, 1910), ruled as king of the United Kingdom and Emperor of India as the successor to his mother, Queen Victoria. There was dispute over who was the correct successor to Edward VI. However, Edward’s Regent at the time, Sir John Dudley, Duke of Northumberland, wanted to prevent the accession of a Catholic monarch. He also had an illegitimate son, Henry Fitzroy, who lived at Windsor Castle for a time. However, Mary and Elizabeth were still considered illegitimate albeit restored to … Edward VII (Albert Edward; 9 November 1841 – 6 May 1910) was King of the United Kingdom of Great Britain and Ireland and Emperor of India from 22 January 1901 until his death in 1910. Mary was the heir presumptive at Edward’s death… under Henry VIII’s will the throne should pass to Edward- Mary - Elizabeth then the children of his sister Mary, which included Jane, if they produced no heirs. Edward VI Edward VI (1537–53) was the only legitimate son of Henry VIII and became king of England at the age of nine following his father's death in 1547. Thus, Edward VI's de jure successor was Mary I (1553–58), but his de facto successor was Jane.