Archduchy of Austria, Austrian Empire, Duke Friedrich IV of Austria, Habsburg Castle, Holy Roman Emperor, Holy Roman Empire, House of Habsburg, Kingdom of Bohemia, Kingdom of Croatia, Kingdom of Hungry, Radbot of Klettgau
Radbot, Count of Klettgau (c. 985 – 1045) was Graf (Count) of the county of Klettgau on the High Rhine in Swabia. Radbot was one of the progenitors of the Habsburg dynasty, and he chose to name his fortress Habsburg.
Radbot was probably the second son of Lanzelin of Klettgau (son of Guntram, Count in Breisgau) and the younger brother of Bishop Werner I of Strasbourg. In 1010, he married Ida (before 979–1035), daughter of Duke Friedrich I of Upper Lorraine and Beatrice of the Franks, Beatrice was a daughter of Hugh the Great, Duke of the Franks and Count of Paris and Hedwig of Saxony, making her sister of Hugh Capét, King of the Franks and niece of Otto I the Great, Holy Roman Emperor.
Their son was named Werner I, Count of Habsburg.
Radbot built Habsburg Castle, and in 1027 established Muri Abbey, built up by Benedictine monks descending from Einsiedeln Abbey.
Radbot’s grandson, Otto II, was the first of the dynasty to take the fortress name as his own, adding “Count of Habsburg” to his title. In 1273, Count Radbot’s seventh-generation descendant Count Rudolph I of Habsburg was elected King of the Romans.
Taking advantage of the extinction of the Babenbergs and of his victory over King Ottokar II of Bohemia at the battle on the Marchfeld in 1278, he subsequently moved the family’s power base to Vienna, where the Habsburgs ruled until 1918.
The throne of the Holy Roman Empire was continuously occupied by the Habsburgs from 1440 until their extinction in the male line in 1740 and, after the death of Franz I, from 1765 the hyphenated House of Habsburg-Lorraine until its dissolution in 1806.
The House of Habsburg also produced kings of Bohemia, Hungary, Croatia, Spain, Portugal and Galicia-Lodomeria, with their respective colonies; rulers of several principalities in the Low Countries and Italy; and in the 19th century, emperors of Austria and of Austria-Hungary as well as one emperor of Mexico.
Habsburg Castle is a medieval fortress located in what is now Habsburg, Switzerland, in the canton of Aargau, near the Aar River. At the time of its construction, the location was part of the Duchy of Swabia. Habsburg Castle is the original seat of the House of Habsburg, which became one of the leading imperial and royal dynasties in Europe. It is listed as a Swiss heritage site of national significance.
The castle was built around 1020 by Count Radbot, of the nearby county of Klettgau in the Duchy of Swabia, and Werner, Bishop of Strasbourg. They had the castle erected 35 km southwest of Klettgau, on the Aar, the largest tributary of the High Rhine. It is believed that he named the castle after a hawk (Hawks Castle) seen sitting on its walls. Some historians and linguists believe the name may come from the Middle High German word hab/hap meaning ford, as it is located near a ford of the Aar River.
Habsburg Castle’s importance diminished after Radbot’s seventh generation descendant Rudolph moved the family’s power base to Austria in 1276. Habsburg Castle remained property of the House of Habsburg until 1415, when Duke Friedrich IV of Austria lost the canton of Aargau to the Swiss Confederacy.