Seven Noble Houses of Brussels

The Seven Noble Houses of Brussels (also called the Seven Lineages or Seven Patrician Families of Brussels; French: Sept lignages de Bruxelles; Dutch: Zeven geslachten van Brussel; Latin: Septem nobiles familiae Bruxellarum) were the seven families or "lineages" whose descendants formed the patrician class and urban aristocracy of Brussels. In the Middle Ages they formed a social class with a monopoly on the civil, military and economic leadership of the urban administration, with privileges that survived until the end of the Ancien Régime.

Source: Wikipedia — Seven Noble Houses of Brussels (CC BY-SA 4.0)