William Marshall and Stephen Devereux stood firm with the King .
William Marshall and Stephen Devereux were deeply involved in the negotiations resulting in the Magna Carta , which John signed at Runnymede on 15 June 1215 .
William Marshall and Stephen Devereux stood firm with the King , and were deeply involved in the negotiations resulting in the Magna Carta , which John signed at Runnymede on 15 June 1215 .