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.

Following the death of Charles the Fat, the Reginarids began a long fight with the Conradines for supremacy in Lotharingia.

It was the combined forces of Bruno I of Lorraine and the Carolingians of West Francia that finally broke the Reginarids' hold on power.

[3] In 958, Reginar III had his lands confiscated and redistributed to Gerard, Count of Metz, of the Matfridings, enemies of his family since the reign of Zwentibold.

[4] The Reginarids supported Lothair of France against Otto II, but they made a deal with the latter in 978.