May 1. April 25 – The Convention Parliament, a new House of Commons for England, freely elected with no requirement for candidates to swear loyalty to the Commonwealth of England, assembles in London to work out the restoration of the monarchy. May 1 – The Convention Parliament votes to welcome the Declaration of Breda and unanimously approves a resolution for England declaring that "according to the ancient and fundamental laws of this kingdom, the Government is, and ought to be, by Kings, Lords and Commons." May 3 – In the Treaty of Oliva, peace is made between the Swedish Empire, the Polish–Lithuanian Commonwealth, the Habsburgs and Brandenburg-Prussia. May 8 – In exile in the Netherlands, Prince Charles Stuart receives word that the Parliament of England has declared his elevation to the throne as King Charles II of England. May 14 – The Irish Parliament declares Charles to be King of Ireland. May 15 – John Thurloe is arrested for high treason, for his support of Oliver Cromwell's regime. May 23 – With the way cleared for his return to England, King Charles II ends his exile at the Hague in the Netherlands and departs from Scheveningen harbor on the English ship Naseby, renamed for the occasion HMS Royal Charles , as part of a fleet of English warships brought by Admiral Edward Montagu. On commemorative memorabilia in the Netherlands, the date of Charles's departure is listed as June 2, 1660, the date on the Gregorian calendar used in continental Europe but not in England. May 25 – King Charles II lands at Dover. May 27 – The Treaty of Copenhagen is signed, marking the conclusion of the Second Northern War. Sweden returns Trøndelag to Norway, and Bornholm to Denmark. May 29 – King Charles II of England arrives in London and assumes the throne, marking the beginning of the English Restoration. June 1 – Mary Dyer is hanged for defying a law banning Quakers from the Massachusetts Bay Colony. June 29 – John Thurloe is released from custody. July–September July 13 – (Ashadh Vadya 1 of Shaka 1582) The Battle of Pavan Khind takes place in India when a 600-member contingent of the Maratha Empire army, commanded by Baji Prabhu Deshpande, works to rescue Maratha General Shivaji, who had escaped the night before from the fort of Panhala, which was under siege by the Adilshah Sultanate. The Bijapur Sultanate, commanded