3 Sep 1658—7 May 1659: Richard Cromwell's Protectorate
Richard Cromwell (4 October 1626 – 12 July 1712) became the second Lord Protector of England, Scotland and Ireland, and was one of only two commoners to become the English head of state, the other being his father, Oliver Cromwell, from whom he inherited the post on his father's death. But but he lacked authority and he formally renounced power nine months after succeeding. Without a king-like figure, such as Oliver Cromwell, as head of state the government lacked coherence and legitimacy.
Although a Royalist revolt was crushed by recalled civil war figure General John Lambert, who then prevented the Rump Parliament from reconvening and created a Committee of Safety, he found his troops melted away in the face of General George Monck's advance from Scotland. Monck then presided over the Restoration of 1660.