Pope Victor III ( Benevento , 1026 ? â `` September 16 , 1087 ) , born Daufer , Latinized Dauferius or Dauphar , Pope ( May 24 , 1086 until his death ) , was the successor of Pope Gregory VII ( 1073 â `` 85 ) , Pope Blessed Victor III ( c. 1026 â `` 16 September 1087 ) , born Daufer ( Dauphar ) , Latinised Dauferius , was the Pope ( from 24 May 1086 ) as the successor of Pope Gregory VII , yet his pontificate is far less impressive in history than his time as Desiderius , the great Abbot of Monte Cassino .