Finally when the Investiture Controversy broke out and King Henry was excommunicated by Pope Gregory VII in February 1076, Duke Rudolf met with Berthold, Welf and several other princes in Trebur in order to decide on a course of action and to arrange a new election.
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He was first mentioned in a 1048 deed issued by the Salian emperor Henry III as a count in the Swabian Sisgau on the High Rhine (in present-day Northwestern Switzerland), an estate then held by the Prince-Bishopric of Basel.
Rudolf Nureyev | Rudolf Steiner | Rudolf Virchow | Rudolf Hess | Rudolf II, Holy Roman Emperor | Rudolf Kempe | Rudolf Hilferding | Rudolf | Rudolf Schwarz | Rudolf Haag | Rudolf, Crown Prince of Austria | Rudolf Schwarz (conductor) | Rudolf Platte | Rudolf Nebel | Rudolf Carnap | Rudolf Thurneysen | Rudolf Stingel | Rudolf Serkin | Rudolf II | Rudolf Bultmann | Rudolf Baumgartner | Rudolf von Jhering | Rudolf Scharping | Rudolf Otto | Rudolf (musical) | Rudolf Kreitlein | Rudolf III, Duke of Saxe-Wittenberg | Rudolf Hruska | Rudolf Flesch | Rudolf Erich Raspe |
Adelaide was born circa 1065 to Rudolf of Rheinfelden, duke of Swabia and German anti-king, and his second wife, Adelaide of Savoy.