In September of 1216 King John was on the offensive again marching east into rebel-held land. While crossing the River Ouse which fed into the Wash estuary King John's baggage train was caught in quicksand and destroyed by the incoming tide. John's supplies and treasures were washed away. The remnants of the King's forces reached Swineshead Abbey where they spent the night. It was here that John either ate too much or could possibly have been poisoned. The next day King John rode to Newark feeling unwell and after reaching the castle he died.
