Limbourg

The House of Limburg grew from the counts of Limburg in the Ardennes, a younger line of Ardenne-Luxembourg who held the title of Lower Lotharingia before styling themselves dukes of Limburg. In 1214 Waleran III married Ermesinde, heiress of Luxembourg, opening a branch that became the House of Luxembourg; around 1218 Henry IV married Irmgard, heiress of Berg, which passed to their son Adolf VII.

Duchess Ermengarde died without issue in 1283, and the War of the Limburg Succession ended at Worringen in 1288, where John I of Brabant defeated Guelders and Luxembourg and annexed Limburg. The Berg line became the senior surviving branch, ruling from Düsseldorf through Counts Adolf VIII, William I and, from 1308, Adolf IX.

Their kinswoman Margaret of Berg-Windeck married Otto IV of Ravensberg in 1313. When Adolf IX died childless in 1348, Berg passed through Margaret's daughter to the counts of Jülich, and the male line ended.