Henry John Spencer British diplomatist, second son of the 4th duke of Marlborough (1770-1795) (1770–1795) Parents Caroline Spencer, Duchess of Marlborough George Spencer, 4th Duke of Marlborough Children Siblings George Spencer-Churchill, 5th Duke of Marlborough Lady Anne Spencer Francis Spencer, 1st Baron Churchill Lady Amelia Spencer Caroline Agar-Ellis, Viscountess Clifden Lady Elizabeth Spencer Charlotte Spencer
