Facts about Mary Boleyn are hazy but it is generally believed she had a daughter Catherine (b 1524) and a son Henry (b 1526) during her first marriage to William Carey - although both children are believed to have been fathered by Henry VIII. Her second marriage to William Stafford is supposed to have produced a short-lived daughter (named Anne) and a son called Edward (1535-1545). Hope this helps.
Mary Boleyn was the sister of the famous Anne Boleyn and was a mistress of King Henry VIII.
Mary Boleyn
King Henry VIII only had six wives. He had a few mistresses though. Such as Anne Boleyn's sister, Mary Boleyn and Elizabeth Blount.
Queen Mary I of England was the daughter of Henry VIII and Catherine of Aragon
Anne and Mary Boleyn were sisters. Both were mistresses to King Henry VIII, but Anne became queen. Mary died in her early forties in 1543; Anne Boleyn was executed in 1536.
Both Mary and Anne were mistresses of Henry VIII and it is rumored that the king even fathered two of Mary's children. Both Boleyn girls were also ladies in waiting to Catherine of Aragon, Henry's wife and queen at that time.
Henry VIII (1491 - 1547) had an acknowledged illegitimate son: Henry Fitzroy (1519 - 1536) Duke of Richmond (by Henry's mistress Elizabeth Blount) There may have been other illegitimate children, possibly by Mary Boleyn, (and in particular her son, Henry Carey) another of Henry's mistresses and sister of Anne Boleyn; but they have not been confirmed or acknowledged, probably because of the timing of Henry's relationship with Mary Boleyn.
The second child of King Henry VIII was Elizabeth I by Henry's second wife Anne Boleyn. After King Henry died in 1547 his son Edward VI by Henry's third wife Jane Seymour came into the throne. Edward at the age of 15 in 1553. After Edward's death Mary, the first child of King Henry by first wife Catherine of Aragon, ruled until 1558. After Mary's death Elizabeth superseded the throne and ruled until her death in 1603.
Henry and Anne Boleyn met at court, once before his affair with her sister (Mary) and again after Henry had discarded Mary. Anne Boleyn's family had sent to her to France after her first meeting with the King, which did not go well, however they recalled her to England after Mary's failure to keep the King's attentions. The Boleyn family, like many at the time, were always trying to gain power and one of the ways to do this was to use their daughters to engratiate the Henry with their family. This was a good stradegy, as Henry was known for giving titles, lands and fortunes to the families of his mistresses.
No buther sister Anne Boleyn was Henry's second wife.
Mary Tudor
Siblings of Elizabeth I that are definitely confirmed are: Mary I Edward VI and an illegitmate brother, Henry Fitzroy, Duke of Richmond. Mary Boleyn bore a child, Henry, which was widely thought to be Henry VIII's illegitmate child, but it was never confirmed. This child was given the surname of Carey, Mary's husband.