Dashed left edge = started before September 1087 ·
Dashed right edge = ongoing beyond September 1087
Events in September 1087 4
1026 – 1087Pope Victor III (1026-1087)Died 16 September 1087, aged 61Victor III, born Daufer and also known as Desiderius, had served as Abbot of Monte Cassino before his contested election as pope in 1086 amid rivalry with the antipope Clement III. He was finally consecrated in Rome in May 1087 but died within months at Monte Cassino. His brief pontificate unfolded against the backdrop of the ongoing Investiture Controversy.
1028 – 1087William I, the Conqueror (1028-1087)Died 9 September 1087, aged 59William I, King of England and Duke of Normandy, died near Rouen after being injured when his horse reared, reportedly aggravating an internal injury sustained during the sack of Mantes. He was buried at the Abbaye-aux-Hommes in Caen. His death split his realm, with Robert Curthose inheriting Normandy and William Rufus becoming King of England.
1087Robert Curthose becomes Duke of NormandySucceeds his father William the ConquerorRobert Curthose succeeded his father William the Conqueror as Duke of Normandy upon William's death on 9 September 1087. The division of William's territories between Robert and his younger brother William Rufus, who took the English throne, set the stage for a long rivalry between the brothers. Robert later pledged Normandy as security to help fund his participation in the First Crusade.
1087William Rufus crowned King of EnglandCoronation at Westminster Abbey following the Conqueror's deathWilliam II, known as William Rufus, was crowned King of England at Westminster Abbey on 26 September 1087, weeks after the death of his father, William the Conqueror. He inherited the English throne while his elder brother Robert Curthose received the Duchy of Normandy, splitting the Anglo-Norman realm. The division set the stage for years of rivalry between the brothers.