He dispossessed barons who opposed him, and exploited his royal powers to accumulate vast personal wealth.John also resented Rome’s power in his ... at Runneymede. Magna Carta – the Great ...

And on 15 June, 1215, they met the king at Runnymede, by the Thames in Surrey, and demanded he sign a peace treaty Magna Carta. John agreed, and for the first time the principle was established ...