I am not sure if accurate and Philippa Gregory should be used in the same sentence? Is that too mean?

Boleyn said

LOL Duchess, and a very good point. SWMNBN is a prime example of meaning double entendre, or to put it in laymans terms a pure Bullshit artist.

Quite long- but here is a list courtesy of Wikipedia Mary Boleyn’s daughter, Catherine, is referred to as Catherine Carey throughout the book. However, she married Francis Knollys in 1539 and would have been called Lady Catherine Knollys.
There is no evidence that Jane faked insanity to save her life. She was, however, insane when she was executed and King Henry VIII repealed a law that said that insane people could not be executed.
Jane and George Boleyn did not have a son. There is no contemporary mention of them having children. This rumour comes from the later prominence of George Boleyn, dean of Lichfield, who was probably a distant cousin. If they had had a son, he would have inherited the titles of Earl of Ormonde and Earl of Wiltshire. Instead, the inheritance went to the crown since there were no male heirs left from Thomas and Elizabeth Boleyn, and King Henry passed the funds along to Mary Boleyn.
In the book, when Jane Boleyn returns to the Queen’s service she mentions being at Greenwich Palace and the last occasion she was there was when she nursed the dying Jane Seymour. Jane Seymour in fact died at Hampton Court. Her son, the future Edward VI, did die at Greenwich fifteen years later.
In the novel, once Katherine Howard is told by her uncle that she is to be sent to court, she promptly ends her affair with Francis Dereham, finding her desire to go is apparently stronger than her love for him. When he comes to her that night, she orders him away. In actuality, Francis Dereham was not in the same place as Katherine Howard at the time she was given the opportunity to go to court. He was away traveling and was not informed of her absence at the home of the dowager duchess until after his return.
In the book, Jane and the Duke of Norfolk plot to put Katherine on the throne. However, there is no evidence that they even talked after the fall of Anne Boleyn. The Duke of Norfolk, after the tragedy of his niece, Anne Boleyn, is highly unlikely to have played such a dangerous game.
Anne of Cleves’s mother was not cruel to her. On the contrary, Anne was said to be her favourite.
In the novel, Jane is said to be aged thirty in the year 1539, meaning she would have to have been born some time in 1509. However, it is more likely that she was born in 1505 and aged thirty-four in 1539.
In the book, Katherine Howard was said to be extremely beautiful (or as she herself says that she “was the most beautiful girl in England”). In reality, Katherine Howard was said to be only “moderately beautiful” but youthful looking.
In the book, Katherine Howard is fourteen years old when she comes to court. Although her exact date of birth is not known, the most common date given is 1521, so she was actually in her late teens when she came to court.
In the book, Anne of Cleves is elated to be free from her marriage, and is horrified at the idea of remarrying the King. In reality, although she agreed to the annulment, she had hopes of becoming Queen again after the execution of Katherine Howard, and was said to be quite unhappy on learning that the King was marrying Katherine Parr. Years after the King died, she attempted to have their marriage declared valid so that she could enjoy the perks of being Queen Dowager.
In the book, Henry’s eldest daughter Mary I of England is openly referred to as Princess Mary but, in reality, she was legally illegitimate at the time and addressed as Lady Mary. His younger daughter Elizabeth, likewise, was only restored to the line of succession after the king’s sixth wife, Katherine Parr, persuaded him to reinstate both of his daughters in the line of succession, although both Mary and Elizabeth remained legally illegitimate. Henry’s daughters never regained their titles of Princess.
It is unlikely that Anne of Cleves met Henry’s younger daughter Elizabeth during their marriage, as portrayed in the novel.