Question: William Coffin was a Gentleman on the Privy Chamber to what King of England from 1509-1547?
Context: A Privy chamber was the private apartment of a royal residence in England.  The gentlemen of the Privy chamber were servants to the Crown who would wait and attend on the King and Queen at court during their various activities, functions and entertainments. James Basset (1526–1558) was a gentleman from an ancient Devonshire family who became a servant of Stephen Gardiner (c. 1483–1555), Bishop of Winchester, by whom he was nominated MP for Taunton in 1553, for Downton in 1554, both episcopal boroughs.  He also served thrice as MP for Devon in 1554, 1555, and 1558.  He was a strong adherent to the Catholic faith during the Reformation started by King Henry VIII.  After the death of King Edward VI in 1553 and the accession of the Catholic Queen Mary I, he became a courtier to that queen as a gentleman of the Privy Chamber and received many favours from both herself and her consort Philip II of Spain. Edmund Harman (c.1509–1577), was the barber-surgeon of Henry VIII of England and a member of his Privy Chamber.  He served alongside Thomas Wendy and George Owen. Sir William FitzWilliam (1506 – 3 October 1559), of Windsor, Berkshire, was an Irish courtier and Member of Parliament in England.  He was Chief Gentleman of the Privy Chamber to Edward VI of England; Deputy Chancellor of Ireland; Lieutenant of Windsor Castle; Keeper of Windsor Great Park and Lord Lieutenant of Berkshire. Henry VIII (28 June 1491 – 28 January 1547) was King of England from 21 April 1509 until his death.  Henry was the second Tudor monarch, succeeding his father, Henry VII. William Clerk was the clerk to the Privy Chamber of Henry VIII of England.  He was a clerk to the Privy Seal from 1542 to 1548 and had permission to use the dry stamp bearing the King's signature from September 1545. Sir William Coffin (by 1492-8 December 1538) was a courtier at the court of King Henry VIII of England.  He was a Gentleman of the Privy Chamber to King Henry VIII and Master of the Horse to Queen Jane Seymour.  He was elected MP for Derbyshire in 1529. William Carey, of Aldenham, in Hertfordshire (  1500 – 22 June 1528) was a courtier and favourite of King Henry VIII of England.  He served the king as a Gentleman of the Privy chamber, and Esquire of the Body to the King.  His wife, Mary Boleyn, is known to history as a mistress of King Henry VIII and the eldest sister of Henry's second wife, Anne Boleyn. Sir Francis Weston KB (1511 – 17 May 1536) was a gentleman of the Privy Chamber at the court of King Henry VIII of England.  He became a friend of Henry VIII and was accused of high treason and adultery with Anne Boleyn, the king's second wife.  Weston was condemned to death, together with George Boleyn, Viscount Rochford, Henry Norris, William Brereton and Mark Smeaton.  They were all executed on 17 May 1536, two days before the Queen. Sir Edward Evelyn, 1st Baronet DL (25 January 1626 – 3 May 1692) was an English Tory Member of Parliament who served in a number of local offices in Surrey and found favour under James II of England.  Removed from several local offices at the close of the latter's reign, he was largely replaced in them by William III and Mary II and appointed a gentleman of the privy chamber.  He died a few years later, dividing his property among the three daughters who survived him.
Answer: Henry VIII