Parliament of 1327

Assassination of Yvain de Galles at the siege of the castle of Mortagne-sur-Gironde – from Jean de Wavrin’s ‘Chronique d’Angleterre’
Wikipedia - "The Parliament of 1327, which sat at the Palace of Westminster between 7 January and 9 March 1327, was instrumental in the transfer of the English crown from King Edward II to his son, Edward III. Edward II had become increasingly unpopular with the English nobility, predominantly because of the excessive influence of unpopular court favourites, the patronage he devoted to them, and his perceived ill-treatment of the nobility. By 1325, even his wife, Queen Isabella, despised him. Towards the end of the year, she took the young Edward to her native France, where she joined and probably entered into a relationship with the powerful and wealthy nobleman Roger Mortimer, whom her husband had exiled. The following year, they invaded England to depose Edward II. Almost immediately, the King's resistance was beset by betrayal, and he eventually abandoned London and fled west, probably to raise an army in Wales or Ireland. He was soon captured and imprisoned.
Isabella and Mortimer summoned a parliament to confer legitimacy on their regime. ..."Wikipedia
amazon: The Origins of the English Parliament, 924-1327

Mortimer and Isabella's invasion route in 1326, Their landing and attack is in green; the King's retreat westward is in blue.