Question: Elements of what play was based on Henry VIII's' unconsummated marriage to his fourth wife Anne of Cleves?

Context articles: Grimston Manor
Send In the Clowns
Frederick Tilney
Lady Jane Seymour
The Play of Wit and Science
Elizabeth Boleyn (lady-in-waiting)
Catherine Howard
Catherine Brandon, Duchess of Suffolk
Anne of Cleves
Marie of Burgundy, Duchess of Cleves

Grimston Manor was a manor house in Norfolk, England.
 In 1524, it was given to George Boleyn, the first grant King Henry VIII made to Boleyn.
 It is assumed that this was given on the wedding of George to Jane Parker.
 Henry VIII was around this time involved in a relationship with George's sister, Mary, and within two years would be pursuing George's other sister, Anne, who became Henry VIII's second wife.
"Send in the Clowns" is a song written by Stephen Sondheim for the 1973 musical "A Little Night Music", an adaptation of Ingmar Bergman's film "Smiles of a Summer Night".
 It is a ballad from Act Two, in which the character Desirée reflects on the ironies and disappointments of her life.
 Among other things, she looks back on an affair years earlier with the lawyer Fredrik.
 Meeting him after so long, she finds that he is now in an unconsummated marriage with a much younger woman.
 Desirée proposes marriage to rescue him from this situation, but he declines, citing his dedication to his bride.
 Reacting to his rejection, Desirée sings this song.
 The song is later reprised as a coda after Fredrik's young wife runs away with his son, and Fredrik is finally free to accept Desirée's offer.
Sir Frederick Tilney (died 1445) Lord of Ashwellthorpe, Norfolk, and Boston, Lincolnshire, England, was the husband of Elizabeth Cheney, Lady Say and father of Elizabeth Tilney, Countess of Surrey.
 He is a great-grandfather of Anne Boleyn, Jane Seymour, and Catherine Howard, three of the wives of King Henry VIII of England, and a great-great-grandfather to King Edward VI, the son of Henry VIII and Jane Seymour, and Queen Elizabeth I, the daughter of Henry VIII and Anne Boleyn.
Lady Jane Seymour (c.1541 – 19 March 1561) was an influential writer during the sixteenth century in England, along with her sisters, Lady Margaret Seymour and Anne Seymour, Countess of Warwick.
 Their brother was Edward Seymour, 1st Earl of Hertford.
 They were the children of Edward Seymour, 1st Duke of Somerset, who from 1547 was the Lord Protector of England after the death of King Henry VIII and during the minority of Jane's first cousin, King Edward VI.
 She was baptised 22 February 1541, and her godparents were Thomas Cromwell (the King's chief minister), Lady Mary (the King's daughter, at the time declared illegitimate but later to become queen) and Katherine Howard, the fifth wife of Henry VIII, and queen at the time.
 Jane was thus the niece of Henry VIII's third wife, Queen Jane, whom she was probably named after.
 She was the sole witness to the secret marriage of her brother Edward to Lady Catherine Grey (a potential heir to Queen Elizabeth I) in 1560.
 She died a year later, aged 20, probably of tuberculosis.
The Play of Wit and Science is a mid-sixteenth-century English morality play written by John Redford.
 It is notable as one of the earliest plays to develop a moral thesis as part of a nominally unrelated plot.
 Redford was best known as a composer of keyboard music, and the play was written to be performed by the children's choir of St. Paul's Cathedral.
 The play concerns itself with education rather than salvation, stemming from Redford's role as a teacher rather than as a preacher.
 The character Wit initially sets off with naive enthusiasm to learn by his own initiative, but eventually gains appreciation for the guidance of instruction in a narrative that contains elements of chivalric romance.
 Elements of the play may also be a reference to Henry VIII's marriage to his fourth wife, Anne of Cleves.
Elizabeth Boleyn was a lady-in-waiting at the court of Henry VIII of England.
 Through her marriage to Sir James Boleyn, she was the aunt of Henry VIII's second wife, Anne Boleyn.
 The two were not close, and Elizabeth Boleyn acted as her niece's gaoler when Queen Anne was arrested on charges of adultery, incest and conspiracy to kill the King.
Catherine Howard (  1523 – 13 February 1542) was Queen of England from 1540 until 1541, as the fifth wife of Henry VIII.
 She (then 16 or 17) married him (then 49) on 28 July 1540, at Oatlands Palace, in Surrey, almost immediately after the annulment of his marriage to Anne of Cleves was arranged.
Catherine Brandon, Duchess of Suffolk, "suo jure" 12th Baroness Willoughby de Eresby (22 March 1519 – 19 September 1580), was an English noblewoman living at the courts of King Henry VIII, King Edward VI and Queen Elizabeth I.
 She was the fourth wife of Charles Brandon, 1st Duke of Suffolk, who acted as her legal guardian during his third marriage to Henry VIII's sister Mary.
 Her second husband was Richard Bertie, a member of her household.
 Following Charles Brandon's death in 1545, it was rumoured that King Henry had considered marrying Catherine as his seventh wife, while he was still married to his sixth wife, Catherine Parr, who was Catherine's close friend.
Anne of Cleves (German: "Anna von Kleve" ; 22 September 1515 – 16 July 1557) was Queen of England from 6 January to 9 July 1540 as the fourth wife of King Henry VIII.
 The marriage was declared never consummated and, as a result, she was not crowned queen consort.
 Following the annulment, she was given a generous settlement by the King, and thereafter referred to as "the King's Beloved Sister".
 She lived to see the coronation of Queen Mary I, outliving the rest of Henry's wives.
Marie of Burgundy, Duchess of Cleves (1393 – 30 October 1466) was the second child of John the Fearless and Margaret of Bavaria, and an elder sister of Philip the Good.
 Born in Dijon, she became the second wife of Adolph, Count of Mark in May 1406.
 He was made the 1st Duke of Cleves in 1417.
 They were the grandparents of King Louis XII of France and the great-grandparents of John III, Duke of Cleves, father of Anne of Cleves, who was fourth Queen consort of Henry VIII of England.
 By their daughter, Catherine, they were ancestors of Mary, Queen of Scots.