Interregnum (1649–1660) Interregnum (1649–1660) The "interregnum" in England, Scotland, and Ireland started with the execution of Charles I in January 1649 (September 1651 in Scotland) and ended in May 1660 when his son Charles II was restored to the thrones of the three realms, although he had been already acclaimed king in Scotland since 1650. The precise start and end of the interregnum, as well as the social and political events that occurred during the interregnum, varied in the three kingdoms and the English dominions. After the Second English Civil War the leadership of the New Model Army felt deeply betrayed by
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