His descendant Duke Conrad II upon the death of King Rudolph I of Germany in 1291 even became a candidate for the election as King of the Romans, but probably was slayed by his opponent Siegfried of Westerburg, Archbishop of Cologne, the next year.
In the Battle of Woeringen in 1288 he captured Archbishop Siegfried, which enabled him to gain supremacy over the Archbishop.
Siegfried II of Westerburg, the Archishop of Cologne and ruler of the Electorate of Cologne, traditional enemy of the Duke of Brabant, forged an alliance with Reginald I, joined by Henry VI, Count of Luxembourg, and his brother Waleran I of Luxembourg, Lord of Ligny, as well as by Adolf, King of Germany.
Siegfried Line | Siegfried & Roy | Siegfried | Siegfried (opera) | Westerburg | Siegfried Wagner | Siegfried Matthus | Siegfried Lenz | Siegfried Palm | Siegfried II of Westerburg | Siegfried von Feuchtwangen | Siegfried Kasche | Siegfried, Count of Merseburg | Siegfried Bernfeld | ''Siegfried'' | Chris Siegfried | Bernhard Siegfried Albinus | Wolf pack Siegfried | Siegfried Verbeke | Siegfried Tiefensee | Siegfried Strelow | Siegfried Selberherr | Siegfried Saloman | Siegfried Reiprich | Siegfried of Luxembourg | Siegfried of Isenburg-Kempenich | ''Siegfried Map'' of the Türlersee | Siegfried Lenz. | Siegfried Köhler | Siegfried III |