January 6, 1649 – The Rump Parliament appoints a High Court to try the King

The Rump Parliament was what remained of the British Parliament after Colonel Pride had purged it a month earlier, leaving only those parliamentarians who supported the army.

On January 6, 1649, the Parliament appointed a total of 135 men to constitute a High Court for the trial of King Charles I for tyranny. A quorum was declated to be twenty of these appointees.

The trial of Charles I commenced shortly thereafter, and duly returned the guilty verdict it was intended to.

Colonel Thomas Pride refusing admission to the Presbyterian members of the Long Parliament.
By UnknownThe Tudors and Stuarts, by M.B. Synge, Public Domain, Link

As mentioned in:

Oliver Cromwell — Monty Python

January 30, 1649 — King Charles I of England is executed

It is the decisive exclamation mark that ends the English Civil War. Never before had an English monarch been deposed, tried and convicted of high treason, and then executed. (To date, no other English monarch has suffered the same fate, either.) The decapitation of Charles the First made plain to the people of England and the courts of Europe that the winds of change were blowing in England.

Charles’ son, Charles II, would eventually be restored to the throne that was his by right of primogeniture, and in the interregnum that followed, England would be variously led by Parliament, by Lord-Protector Oliver Cromwell, and briefly, by Lord-Protector Richard Cromwell (Oliver’s less talented and determined son). The restored king was a damned sight more careful of Parliament, and the gradual decline of the power of the monarchy would only continue from this time onwards.

August 15, 1649 — Cromwell lands in Ireland

The initial stages of Cromwell’s invasion of Ireland started well for him. His forces triumphed over the Royalist and Irish forces at the battle of Rathmines on August 2, 1649, and Cromwell himself landed in Dublin on August 15, with a fleet of 35 ships. 77 more ships, also loaded with troops and materiel, landed two days later, reinforcing the already substantial forces of Cromwell.

His conquest of Ireland was bloody and brutal. Cromwell’s religious tolerance did not extend to Catholics, whose numbers included the over-whelming majority of the Irish. Cromwell’s invasion marked the beginning of more than three and half centuries of oppression of the Irish Catholic majority by their Protestant British conquerors, ending only in 1922 when the independent Republic of Eire was formed – and arguably not even then, considering the endless fighting between Protestant and Catholic in Northern Ireland even today.

Another thing that continues to the current day is the unpopularity of Oliver Cromwell in Ireland, for understandable reasons.

Oliver Cromwell by Samuel Cooper.jpg
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As such, use of this image in the jurisdiction of the claimant or other countries may be regarded as copyright infringement. Please see Commons:When to use the PD-Art tag for more information., Public Domain, Link

As mentioned in:

Oliver Cromwell — Monty Python
Think Back and Lie of England — Skyclad