The Treaty of Rheinfelden (German : Rheinfelder Hausordnung) was the first Habsburg order of succession, concluded on 1 June 1283 at the Imperial City of Rheinfelden.
Rudolph of Habsburg had been chosen as King of the Romans in 1273 and had defeated his rival Ottokar II of Bohemia who was killed at the 1278 Battle on the Marchfeld. Ottokar's son Wenceslaus II retained the Bohemian Kingdom, while Ottokar's estates in Austria, Styria, Carinthia and Carniola fell back to the Holy Roman Empire.
King Rudolph had reached an agreement with the prince-electors to award these territories to his sons and, at the Diet of Augsburg in 1282, Albert I and his brother Rudolph II "jointly and severally" received Austria, Styria, Carniola and the Windic March. However, in 1286, Meinhard II of Gorizia-Tyrol became Duke of Carinthia as recompensation for supporting King Rudolph against Ottokar, and also received Carniola and the Windic March as fiefs.
Deviating from these decisions, the Rheinfelden Treaty set down the primogeniture order: then eleven-year-old Duke Rudolph II had to waive all his rights to the thrones of Austria and Styria to the benefit of his elder brother Albert I. According to the terms of the agreement, Rudolf should receive some territories in Further Austria in return but was never compensated until his death in 1290. This fact induced his son John Parricida to murder Albert in 1308.
The adoption of the primogeniture right crucially strengthened the Habsburg influence within the Holy Roman Empire as it allowed the dynasty to constitute a compact allodial territory (Hausmacht) that it could rely on. It nevertheless did not prevent the partition of the Habsburg lands by the 1379 Treaty of Neuberg.
The House of Habsburg, alternatively spelled Hapsburg in English and also known as the House of Austria is one of the most prominent dynasties in European history.
Albert I of Habsburg was a Duke of Austria and Styria from 1282 and King of Germany from 1298 until his assassination. He was the eldest son of King Rudolf I of Germany and his first wife Gertrude of Hohenberg. Sometimes referred to as 'Albert the One-eyed' because of a battle injury that left him with a hollow eye socket and a permanent snarl.
Rudolf I was the first King of Germany from the House of Habsburg. The first of the count-kings of Germany, he reigned from 1273 until his death.
The Duchy of Carinthia was a duchy located in southern Austria and parts of northern Slovenia. It was separated from the Duchy of Bavaria in 976, and was the first newly created Imperial State after the original German stem duchies.
Ernest the Iron, a member of the House of Habsburg, ruled over the Inner Austrian duchies of Styria, Carinthia and Carniola from 1406 until his death. He was head of the Habsburg Leopoldian line from 1411.
The Battle on the Marchfeld at Dürnkrut and Jedenspeigen took place on 26 August 1278 and was a decisive event for the history of Central Europe for the following centuries. The opponents were a Bohemian (Czech) army led by the Přemyslid king Ottokar II of Bohemia and the German army under the German king Rudolph I of Habsburg in alliance with King Ladislaus IV of Hungary. With 15,300 mounted troops, it was one of the largest cavalry battles in Central Europe during the Middle Ages. The Hungarian cavalry played a significant role in the outcome of the battle.
Rudolf II, a member of the House of Habsburg, was Duke of Austria and Styria from 1282 to 1283, jointly with his elder brother Albert I, who succeeded him.
John Parricida or John the Parricide, also called John of Swabia, was the son of the Habsburg duke Rudolf II of Austria and Agnes, daughter of King Ottokar II of Bohemia. By killing his uncle, King Albert I of Germany, he foiled the first attempt of the Habsburg dynasty to install a hereditary monarchy in the Holy Roman Empire.
The Treaty of Neuberg, concluded between the Austrian duke Albert III and his brother Leopold III on 25 September 1379, determined the division of the Habsburg hereditary lands into an Albertinian and Leopoldian line.
Inner Austria was a term used from the late 14th to the early 17th century for the Habsburg hereditary lands south of the Semmering Pass, referring to the Imperial duchies of Styria, Carinthia and Carniola and the lands of the Austrian Littoral. The residence of the Inner Austrian archdukes and stadtholders was at the Burg castle complex in Graz.
The Duchy of Carniola was an imperial estate of the Holy Roman Empire, established under Habsburg rule on the territory of the former East Frankish March of Carniola in 1364. A hereditary land of the Habsburg monarchy, it became a constituent land of the Austrian Empire in 1804 and part of the Kingdom of Illyria until 1849. A separate crown land from 1849, it was incorporated into the Cisleithanian territories of Austria-Hungary from 1867 until the state's dissolution in 1918. Its capital was Ljubljana.
The Leopoldian line was a sequence of descent in the Habsburg dynasty begun by Duke Leopold III of Austria, who, after the death of his elder brother Rudolf IV, divided the Habsburg hereditary lands with his brother Albert III according to the 1379 Treaty of Neuberg.
The Duchy of Austria was a medieval principality of the Holy Roman Empire, established in 1156 by the Privilegium Minus, when the Margraviate of Austria (Ostarrîchi) was detached from Bavaria and elevated to a duchy in its own right. After the ruling dukes of the House of Babenberg became extinct in male line, there was as much as three decades of rivalry on inheritance and rulership, until the German king Rudolf I took over the dominion as the first monarch of the Habsburg dynasty in 1276. Thereafter, Austria became the patrimony and ancestral homeland of the dynasty and the nucleus of the Habsburg monarchy. In 1453, the archducal title of the Austrian rulers, invented by Duke Rudolf IV in the forged Privilegium Maius of 1359, was officially acknowledged by the Habsburg emperor Frederick III.
The (Princely) County of Tyrol was an estate of the Holy Roman Empire established about 1140. After 1253, it was ruled by the House of Gorizia and from 1363 by the House of Habsburg. In 1804, the county of Tyrol, unified with the secularised prince-bishoprics of Trent and Brixen, became a crown land of the Austrian Empire. From 1867, it was a Cisleithanian crown land of Austria-Hungary.
The Counts of Gorizia, also known as the Meinhardiner, were a comital, princely and ducal dynasty in the Holy Roman Empire. Named after Gorizia Castle in Gorizia, they were originally "advocates" (Vogts) in the Patriarchate of Aquileia who ruled the County of Gorizia (Görz) from the early 12th century until the year 1500. Staunch supporters of the Emperors against the papacy, they reached the height of their power in the aftermath of the battle of Marchfeld between the 1280s and 1310s, when they controlled most of contemporary Slovenia, western and south-western Austria and north-eastern Italy mostly as (princely) Counts of Gorizia and Tyrol, Landgraves of Savinja and Dukes of Carinthia and Carniola. After 1335, they began a steady decline until their territories shrunk back to the original County of Gorizia by the mid 1370s. Their remaining lands were inherited by the Habsburg ruler Maximilian I.
The Marchof Carniola was a southeastern state of the Holy Roman Empire in the High Middle Ages, the predecessor of the Duchy of Carniola. It corresponded roughly to the central Carniolan region of present-day Slovenia. At the time of its creation, the march served as a frontier defense against the Kingdoms of Hungary and Croatia.
The Windic March was a medieval frontier march of the Holy Roman Empire, roughly corresponding to the Lower Carniola region in present-day Slovenia. In Slovenian historiography, it is known as the Slovene March.
The Duchy of Styria was a duchy located in modern-day southern Austria and northern Slovenia. It was a part of the Holy Roman Empire until its dissolution in 1806 and a Cisleithanian crown land of Austria-Hungary until its dissolution in 1918.
Frederick I of Celje also Frederick I of Cilli, was a Styrian free noble who became the first Count of Celje, founding a noble house that would dominate Slovenian and Croatian history in the first half of the 15th century.
Ulrich of Sanneck, Lord of Žovnek, was a free noble in the March of Savinja in what was then the Holy Roman Empire and is now in Slovenia. During the struggle between Henry, Duke of Carinthia and the Habsburg rulers of Austria and Styria, he sided with the latter. By accepting the Habsburgs as his liege lords, he was instrumental in transferring the lordship over the Savinja region from the Meinhardiner-dominated Carniola to Habsburg Styria. His second marriage with the noblewoman Catherine of Heunburg would enable their son to claim the Heunburg inheritance in Carinthia and in the Savinja Valley, including the strategically important Celje Castle. This union of the Sanneck (Žovnek) and Heunburg (Vovbre) noble houses would give birth to the House of Celje.