Itterbeek used to be part of the
allodium of
Sint-Pieters-Leeuw. During the 9th century, it became subject to the chapter of
Cologne. Itterbeek gained some importance in the 13th century when the area, despite the presence of vassals of the family van der Aa, came under the power of Gaasbeek and formed the so-called Nieuw Land van Gaasbeek together with
Dilbeek and
Sint-Martens-Bodegem. Judicial power was exercised by a bench of aldermen. Around 1244, Itterbeek became a separate parish, as part of the
diocese of Cambrai. The oldest seal of Itterbeek, used in 1309, consists of a star and the words “S. Scabinorum de Itterbeka”. On a second seal, used around 1380, a crowned lion carrying a double rook is seen. The escutcheon of Itterbeek is derived from this seal. In 1690 Itterbeek, Dilbeek and Sint-Martens-Bodegem were made a countship, Tirimont, by
Charles II of Spain, and awarded to
Louis-Alexander Scockart. In 1977 Itterbeek became a part of Dilbeek. == Geography ==