In England, Harford succeeded in his claim to his father's inheritance; the rents from the Calvert estates in Britain were awarded to Harford by Act of Parliament - the Estate Act of 1780. However, events in America moved against his interests, and in 1781 the new State of Maryland confiscated all of Henry Harford's estates and used their income to help finance the cash-strapped revolutionary government and its militia. On 3 September 1783 the Treaty of Paris at last brought a formal end to the war.