Henry VIII introduces Ambassador Chapuys to Jane Seymour, like it was her first time meeting him – she had been at court for some years serving both Katherine of Aragon and Anne Boleyn, so would have met the ambassador before.
Jane Boleyn, Lady Rochford, served as Jane’s principal lady-in-waiting – Jane Boleyn did serve under Jane Seymour, but the latter’s principal lady-in-waiting was actually her sister, Elizabeth Seymour.
Francis Bryan first appears in season 3 – he was actually active at court from 1528, and was instrumental in helping Cromwell to bring about the fall of Anne Boleyn, although this isn’t shown.
Francis Bryan threatening to beat Mary’s head against the wall until it was as soft as a boiled apple – these words were spoken to Mary, but it was before her mother had even died (season 2) and it wasn’t by Francis Bryan, but by either George Talbot or Thomas Howard, both staunch Boleyn supporters.
The women at the Tudor court all seems to wear crowns and tiaras – all women in the Tudor court would have worn hoods rather than these, even queens.