History of the English line of succession who became James I of England. On the day of James I's death, 27 March 1625, the line of succession to the English throne was: Upon his death, the throne passed smoothly to the first person in line, who became Charles I. When Charles I was beheaded on 30 January 1649 the line of succession to the English and Scottish thrones was: However, the monarchy in England was abolished and Oliver Cromwell became Lord Protector. After Cromwell's death, the monarchy was restored in 1660 under Charles I's eldest son, Charles II. On the day of Charles II death, 6 February
Treaty of Copenhagen (1660) had already agreed with England that preventing the western and eastern shore of Øresund from being controlled by the same country would in turn prevent future raises of the Øresund toll, which would cause disruption in the Dutch and English Baltic trade. In addition, Cardinal Mazarin threatened a French invasion of the Netherlands if it were to assist Denmark against Sweden. When learning of Charles' death in February 1660, Frederick immediately proclaimed the Treaty of Roskilde null and void. This caused great alarm to the Swedish mediators, but their French and English counterparts assured them that if Sweden were to