After Sedgemoor
Monmouth fled from the field of battle, but was captured in a ditch on 8 July (either at Ringwood in the New Forest, or at Horton in Dorset). Following this, Parliament passed an Act of Attainder, 1 Ja. II c. 2. Despite begging for mercy, and claims of conversion to Roman Catholicism, he was executed by Jack Ketch on 15 July 1685, on Tower Hill. It is said that it took multiple blows of the axe to sever his head. (Though some sources say it took eight blows, the official Tower of London website says it took five blows, while Charles Spencer, in his book Blenheim, claims it was seven.) His dukedoms of Monmouth and Buccleuch were forfeited, but the subsidiary titles of the dukedom of Monmouth were restored to the Duke of Buccleuch.
The subsequent Bloody Assizes of Judge Jeffreys were a series of trials of Monmouth's supporters in which 320 people were condemned to death and around 800 sentenced to be transported to the West Indies.
James II took advantage of the suppression of the rebellion to consolidate his power. He asked Parliament to repeal the Test Act and the Habeas Corpus Act, used his dispensing power to appoint Roman Catholics to senior posts, and raised the strength of the standing army. Parliament opposed many of these moves, and on 20 November 1685 James dismissed it. In 1688, when the birth of James Francis Edward Stuart heralded a Catholic succession, James II was overthrown in a coup d'état by William of Orange in the Glorious Revolution at the invitation of the disaffected Protestant Establishment.
Read more about this topic: Monmouth Rebellion