The Wonderful Parliament was a session of the English parliament held from October to November 1386 in Westminster Abbey. Originally called to address King Richard II's need for money, it quickly refocused on pressing for the reform of his administration. The King had become increasingly unpopular because of excessive patronage towards his political favourites combined with the unsuccessful prosecution of war in France. Further, there was a popular fear that England was soon to be invaded, as a French fleet had been gathering in Flanders for much of the year. Discontent with Richard peaked when he requested an unprecedented sum to raise an army with which to invade France. Instead of granting the King's request, the houses of the Lords and the Commons effectively united against him and his unpopular chancellor, Michael de la Pole, 1st Earl of Suffolk. Seeing de la Pole as both a favourite who had unfairly benefited from the King's largesse, and the minister responsible for the King's failures, parliament demanded the earl's impeachment.
At first, the King refused to attend the parliament, instead attempting—unsuccessfully—to dissolve the sitting. Richard requested the Commons send a delegation to negotiate with him at Eltham Palace; they, fearing an ambush, sent two lords instead. One of them, the Duke of Gloucester (Richard's uncle) threatened Richard with deposition unless the King agreed to return to Westminster and do parliament's bidding. He was forced to sack the unpopular de la Pole and was restricted to advisers vetted and appointed by parliament. The King was incensed at what he perceived to be an unnatural restriction on his God-given right to appoint his own ministers and advisers; he left Westminster almost immediately. He spent much of the following year gathering support, ignoring his parliament-imposed council, and taking legal advice on how to annul the constraints on his rule. During this time de la Pole was returned to royal favour. Although the King managed to overturn most of the restrictions the Wonderful Parliament placed upon him, within a few years the crisis had resurged, even worse than in 1386. Armed conflict broke out between crown and nobility, eventually resulting in de la Pole's exile, and the execution of many of his supporters.