Diepold III, Margrave of Vohburg

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Diepold III, Margrave of Vohburg" – news · newspapers · books · scholar · JSTOR (July 2024) (Learn how and when to remove this message)

Diepold III, Margrave of Vohburg (c. 1079 – 1146) was a Bavarian noble from the House of the Diepoldinger-Rapotonen. He was an influential follower of Emperor Henry V and is best known as the father-in-law of Emperor Frederick Barbarossa.

He was Margrave of the Nordgau, of Nabburg, Vohburg and Cham. His father was Diepold II, his grandfather Diepold I, margraves of Cham and Vohburg. In 1099 Diepold III took over the rich inheritance of his two relatives, Burgrave Ulrich von Passau and Rapoto V von Cham. Both had died of an epidemic at Easter 1099 at an Imperial Diet in Regensburg.^[1] The scattered inheritance included the Margraviates of Cham and Vohburg as well as possessions in the Chiemgau, in Swabia and in Lower Austria. However, he did not inherit the title Count Palatine of Bavaria which Rapoto V had borne.

In 1119 Diepold III founded Reichenbach Abbey (where he was buried) and in 1133 Waldsassen Abbey.

He continued the land development in Egerland through forest clearing, founding of villages and the settlement of German colonists that his father had started. However, after his death in 1146, the Egerland once again became the property of the Bohemian crown.