| House of Brabant Maison de Brabant House of Hainaut, House of Louvain | |
|---|---|
| Ducal noble family | |
 | |
| Country |  Holy Roman Empire Kingdom of France Kingdom of England Duchy of Brabant |
| Earlier spellings | Reginarids |
| Etymology | Descendant of Reginar |
| Founded | 880 |
| Founder | Reginar I, Count of Hainaut |
| Current head | Donatus, Landgrave of Hesse |
| Final ruler | Joanna, Duchess of Brabant |
| Titles | |
| Estate(s) | Coudenberg |
| Dissolution | 1406 (senior branch) |
| Cadet branches | House of Hesse House of Percy |
The Reginarids (or Regnarids, Regniers, Reiniers, etc.)[1] were a family of magnates in Lower Lotharingia during the Carolingian and Ottonian period. Their modern name is derived from the personal name which many members of the family bore, and which is seen as a Leitname of the family. At least two Dukes of Lotharingia in the 10th century belonged to this family. After a period of exile and rebellion, the two brothers who returned to power founded the first dynasties of the County of Hainault and County of Louvain. The latter were ancestors of the House of Brabant, Landgraves and later Dukes of Brabant, Lothier and Limburg. The Reginarid Brabant dynasty ended in 1355, leaving its duchies to the House of Luxembourg which in turn left them to the House of Valois-Burgundy in 1383. Junior branches of the male line include the medieval male line of the English House of Percy, Earls of Northumberland, and the German House of Hesse which ruled Hesse from 1264 until 1918, included King Frederick of Sweden and still exists today.