The 12th century church, occupying the present-day site of Sheffield Cathedral, was destroyed in 1266 during the Second Barons' War in which [[Simon de Montfort]] led the barons against the royalist forces of [[Henry III]]. Sheffield's castle was also destroyed. | The 12th century church, occupying the present-day site of Sheffield Cathedral, was destroyed in 1266 during the Second Barons' War in which [[Simon de Montfort]] led the barons against the royalist forces of [[Henry III]]. Sheffield's castle was also destroyed. |