Jane Boleyn, Viscountess Rochford (c. 1505 – 13 February 1542) was a sister-in-law of King Henry VIII of England. She was the wife of George Boleyn, 2nd Viscount Rochford, brother of Henry's second wife, Anne Boleyn. Jane was lady-in-waiting to Henry's third and fourth wives, and also served as lady-in-waiting to Henry's fifth wife, Catherine Howard, with whom she was executed.

After her husband's execution, Lady Rochford was absent from court for several months. It is unknown when she returned to court, but she was a lady-in-waiting to Queen Jane Seymour, so she probably returned within a year of her husband's death. (Jane Seymour died soon after childbirth, within eighteen months of becoming Henry's wife.)

Following Jane Seymour's death, the King subsequently married his fourth wife Anne of Cleves, a German princess recommended by Cromwell. However Henry soon wanted to be rid of Anne, and sought an annulment. In July 1540, Lady Rochford testified that the Queen had confided in her that the marriage had never been consummated. This allowed the king to annul the marriage and marry his teenage mistress, Catherine Howard. Lady Rochford kept her post as lady-in-waiting to the new Queen Catherine.

Jane Boleyn was executed due to facilitating Catherine Howard's adultery.

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