Discover how a single cup of poisoned wine at a royal banquet didn't just kill a prince—it vaporized the line of succession, collapsed a ruling house, and ignited a century of war. This video dissects the exact mechanics of palace power, from the seating at the feast to the legal chaos that followed, showing how one meal rewrote the map of Europe. Chapters: 00:00 A king's last supper 00:25 The French claim 00:44 The child heir 01:03 The real blade 01:20 The myth endures 01:42 The king's last journey 02:01 The loss of the royal treasure 02:22 The barons' betrayal 02:38 The regency's gamble 02:56 The French invasion 03:15 The treaty that saved a dynasty 03:33 The seeds of future wars 03:51 One meal, one heir Sources & further reading: • Roger of Wendover, Flores Historiarum — Chronicle covering John's reign, including his death and the rumors of poison. • The Magna Carta, 1215 — Primary document that was annulled, leading to the baronial rebellion. • William Marshal's biography, Histoire de Guillaume le Maréchal — Contemporary account of the regency and the aftermath of John's death. • The Treaty of Lambeth, 1217 — Document that ended the First Barons' War and secured Henry III's throne. • British Library, Cotton MS Claudius D. II — Contains the Magna Carta and other documents from John's reign. • The National Archives, E 403/8 — Exchequer records from 1216, detailing the financial state after John's death.











