The Landgraviat of Brabant shall be distinguished from the Duchy of Brabant. The Duchy of Brabant was initially a feudal elevation of the landgraviat, but its name was applied to the entire country under control of the Dukes of Brabant from the 13th century on. Brabant is a former duchy in the Low Countries, and a former province of Belgium. ...

This imperial fief was assigned to Count Henry III of Leuven about 1085/1086, more exactly after the death of the preceding Count of Brabant, Count Palatine Herman II of Lotharingia (+ September 20, 1085). September 20 is the 263rd day of the year (264th in leap years). ... Events May 25 - Alfonso VI of Castile takes Toledo, Spain back from the Moors. ...

The county was quite small: it was limited to the territory between the rivers Dender en Zenne, situated to the west of Brussels.