Question

How did Charles II, after he accepted the English crown in 1660, mark his opinion of Oliver Cromwell and other leaders (by now all dead) in the Civil War and trial which resulted in his father's execution 11 years earlier?

Answer 1

Their bodies were disinterred, tried for high treason, hanged and then beheaded
On 30 January 1661, Oliver Cromwell’s body, along with that of John Bradshaw, President of the High Court of Justice for the trial of King Charles I, and of Henry Ireton, Cromwell’s son-in-law and general in the Parliamentary army during the English Civil War, were removed from their burial places in Westminster Abbey. The "men" were then tried and symbolically executed, with their heads being displayed outside Westminster for 24 years as the heads of traitors, unlike Cromwell's treatment of Charles I's body where he ordered the king's head sewn back to the body to allow his family to say farewell with dignity.