Short answers, pulled from the story.
William Carey was a courtier and favourite of Henry VIII, serving as a Gentleman of the Privy Chamber and Esquire of the Body to the King. He was married to Mary Boleyn, who became Henry VIII's mistress, and was the brother-in-law of Anne Boleyn, Henry's second wife. Carey and Henry VIII were third cousins through the Beaufort family line.
William Carey died of the sweating sickness on the 22nd of June 1528. Henry VIII's secretary Brian Tuke recorded the death in a letter written the following day, noting that Carey had been speaking about riding and hunting just hours before he died.
William Carey and Mary Boleyn had two children: Catherine Carey, born around 1524, and Henry Carey, born on the 4th of March 1526. Catherine served as lady-in-waiting to Elizabeth I, while Henry was created 1st Baron Hunsdon and made a Knight of the Garter in 1561 by Elizabeth I.
William Carey introduced the Flemish artist Lucas Horenbout to England in the mid-1520s. Horenbout was already celebrated on the continent, and his arrival at the English court contributed to the development of portrait miniature painting under Henry VIII.
William Carey and Henry VIII were third cousins. Carey's maternal grandmother Eleanor Beaufort was the daughter of Edmund Beaufort, 2nd Duke of Somerset, whose brother John Beaufort was the father of Margaret Beaufort, grandmother of Henry VIII.
After William Carey died deeply in debt, Mary Boleyn was left in financial difficulty and was reduced to pawning her jewellery. Anne Boleyn, her sister and Henry VIII's intended queen at the time, eventually arranged a pension for her.