Did Queen Elizabeth I have any siblings?

Answer 1

Elizabeth I's siblings, by her father Henry VIII were:

Mary - (1516 -1558) daughter of Katherine of Aragon, Henry's first wife.
Edward - (1537 - 1553) son of Jane Seymour, Henry's third wife.

They became: Mary I and Edward VI.

Henry Fitzroy, Duke of Richmond (1519 - 1536) was the illegitmate son of Henry VIII and his mistress, Elzabeth Blount. He died when he was 17. Henry Fitzroy was the only acknowledgedillegitimate child of Henry VIII.

Henry Carey (1526 - 1596) was the child of Mary Boleyn (sister of Anne). As Mary Boleyn had been a mistress of Henry VIII, there was much speculation that this child was also Henry VIII's. But this was never acknowledged. Mary Boleyn was actually married to William Carey. During the reign of Elizabeth I, Henry Carey became Baron Hunsdon and was eventually made Lord Chamberlain. He and Elizabeth were cousins through their mothers.