I want to know the answer to the following question:
When did new interpretations of John's reign begin to emerge?
All the background I'm provided with is that "Interpretations of Magna Carta and the role of the rebel barons in 1215 have been significantly revised: although the charter's symbolic, constitutional value for later generations is unquestionable, in the context of John's reign most historians now consider it a failed peace agreement between "partisan" factions.". Is that enough to answer the question?