When was Mary Seymour died?

Mary Seymour, the daughter of Lady Jane Grey and Lord Guildford Dudley, is believed to have died in 1554, though the exact date is not documented. After the execution of her mother and her family’s downfall, she was placed in the care of relatives but disappeared from historical records, leading to uncertainty about her fate. Some sources suggest she may have died young, possibly in infancy or early childhood.