 The king's half-brother John Holland, 1st Duke of Exeter, Earl of Huntingdon accompanied him to the scaffold, as one of King Richard's representatives.Less than three years later in 1400, when Holland joined a conspiracy to murder the new king Henry IV (Joan's former son-in-law), and was captured near Joan's principal residence Pleshy Castle in Essex, he was turned over to her for punishment.Described as having possessed a "stern character", she showed him no mercy, and promptly gave orders for his decapitation, after having summoned the children of her dead brother to witness the execution.