Mary de Bohun was an English noblewoman born around 1369. She was the daughter of Humphrey de Bohun, the 7th Earl of Hereford, and Joan Fitzalan. Mary is best known for her marriage to Henry IV of England, which took place in 1380. Together, they had several children, including the future king, Henry V. Mary de Bohun passed away in 1394, before her husband ascended to the throne. Her legacy continued through her children, particularly Henry V, who became a significant figure in English history, known for his military successes during the Hundred Years' War.