Contrary to common knowledge, Henry FitzRoy was the illegitimate son of King Henry VIII through his mistress, Elizabeth Blount, who was a maid of honor to Henry VIII’s first wife. This made FitzRoy a half-brother to Elizabeth I, Mary I, and Edward VI.
However, had Henry out-lived his father, it is widely accepted that he would not have become king because he was born out of wedlock. Instead, Henry VIII made him the Duke of Richmond in 1525 and he grew up comfortably as if he were an actual prince. He died at the age of 17 from debated causes, the same time Parliament was contemplating an Act that would have disinherited the future Queen Elizabeth I and allowed The King to name a successor, whether legitimate or not.
“Fitzroy” is a Norman-French surname meaning “son of the King” and was a name given to monarchs’ illegitimate sons.