On March 16, 1410, John Beaufort, Earl of Somerset passed away at the Hospital of St Katherine’s near the Tower of London. Half-brother to King Henry IV, he was the eldest son born from the union of John of Gaunt, Duke of Lancaster and his third wife, Katherine Swynford. He left behind a widow, Margaret Holland, Countess of Somerset, and six children who spanned the ages (roughly) of nine to infancy. His parents already deceased, the protection of John’s heirs and the success of the Beaufort name fell to his two younger brothers, Henry and Thomas Beaufort, who had already forged successful careers in the Church and military, respectively, and were deeply enmeshed in the King’s government.

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