Who was married to Lord Guilford Dudley when she became Queen of England?

Lady Jane Grey (c. 1537 – 12 February 1554), later known as Lady Jane Dudley (after her marriage to Lord Guildford Dudley) and as the "Nine Days' Queen", was a teenage English noblewoman who claimed the throne of England and Ireland from 10 July until 19 July 1553.

Jane was the great granddaughter of Henry VII through his younger daughter Mary, and was a first cousin once removed of Edward VI. She had an excellent humanist education and a reputation as one of the most learned young women of her day. In May 1553, she married Lord Guildford Dudley, a younger son of Edward's chief minister John Dudley, Duke of Northumberland.

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 Catholic, while Jane was a committed Protestant and would support the reformed Church of England, whose foundation Edward laid.

After Edward's death, Jane was proclaimed queen on 10 July 1553 and awaited coronation in the Tower of London. Support for Mary grew quickly, and most of Jane's supporters abandoned her. The Privy Council of England suddenly changed sides and proclaimed Mary as queen on 19 July 1553, deposing Jane. Jane was held prisoner in the Tower and was convicted of high treason in November 1553. Jane and her husband were executed on 12 February 1554. The execution took place at Tower Hill, where they were both beheaded.