Lady Katherine Grey, sister of Lady Jane Grey, fell in love and got secretly married, then wound up in jail for the rest of her life. She also had a pet monkey (??).
Marie de Guise was the mother of Mary Queen of Scots. She was also Tall, Glamorous, had her own bespoke armour, and lived an AMAZING LIFE.
Lady Margaret Douglas was a ruthless survivor whose ambition and cleverness changed the course of English monarchy forever.
Catherine Howard was elevated from obscurity, burned fire bright, and died for it.
Anne of Cleves was out of her depth at English court, but wound up living longer and happier than any of Henry's other wives.