The Hochburg ("high castle") is a castle ruin situated between the city of Emmendingen and the village of Sexau in the region of Baden, located in the southwest of Germany. It was presumably built in the 11th century and was originally known as castle Hachberg. The line of nobles known as the Margraves of Baden-Hachberg most likely derive their name from this castle and before it was razed by the French it was the second largest fortification in Baden. The name Historians are uncertain about where the name Hachberg comes from. One theory is that an estate in the region was given to a man referred to as Hacho who was a part of Charlemagnes retinue. This hypothesis is also supported by an engraved plaque added to the castle by Karl II and a document dating back to 1161 mentions it as Castro Hahberc. In any case, whoever the true builder of the castle is most likely chose its name for their lineage, resulting in the family sidebranch of the house of Baden known as Baden-Hachberg. The first mention of a transition from Hachberg to Hochberg can be found in French sources concerned with members of the lineage of Hachberg-Sausenberg, who were the counts of Neuenburg as well. The name Hochberg sees its German revival as late as 1787, when Margrave Karl Friedrich, as second husband, married Luise Karoline Freiin Geyer von Geyersberg and made her the Imperial Countess of Hochberg. History The Lords of Hachberg Dietrich von Emmendingen (who later called himself von Hachberg) most likely founded the castle to harvest the forests surrounding it for lumber. Its first mention dates back to a document from 1127. The further development of later property documents suggests that Erkenbold von Hachberg, the last of his name, gave his holdings to the Zähringer to finance his participation in the crusades (1147–1149). The Margraves of Baden 1161–1212 A document on the talks about the founding of the monastery Tennenbach from 1161 implies that Hermann IV von Baden was the reigning lord of castle Hachberg at the time. When his sons Hermann V and Henrich I divided the margraviate among each other in 1212 the castle became the centre of power for the margraves of Baden-Hachberg. The Margraves of Baden-Hachberg 1212–1415 The Margraves of Baden-Hachberg ruled from the Hochburg for two centuries, until Margrave Bernhard I, of the main family of Baden, acquired the