Princes of the Holy Roman Empire in the context of "Duchy of Bohemia"

The Electoral Palatinate was a constituent state of the Holy Roman Empire until it was annexed by the Electorate of Baden in 1803. From the end of the 13th century, its ruler was one of the Prince-electors who elected the Holy Roman Emperor, ranking them among the most significant secular Princes of the Holy Roman Empire.

The Palatinate consisted of a number of widely dispersed territories, ranging from the left bank of the Upper Rhine in the modern state of Rhineland-Palatinate, adjacent parts of the French regions of Alsace and Lorraine to the opposite territory on the east bank of the Rhine in present-day Hesse and Baden-Württemberg up to the Odenwald range and the southern Kraichgau region, containing the capital cities of Heidelberg and Mannheim.

An Imperial Estate (Latin: Status Imperii; German: Reichsstand, plural: Reichsstände) was an entity or an individual of the Holy Roman Empire with representation and the right to vote in the Imperial Diet (Reichstag). Rulers of these Estates were able to exercise significant rights and privileges and were "immediate", meaning the only authority above them was that of the Holy Roman Emperor. They were thus able to rule their territories with a considerable degree of autonomy.

The system of imperial states replaced the more regular division of Germany into stem duchies in the early medieval period. The old Carolingian stem duchies were retained as the major divisions of Germany under the Salian dynasty, but they became increasingly obsolete during the early high medieval period under the Hohenstaufen, and they were finally abolished in 1180 by Frederick Barbarossa in favour of more numerous territorial divisions. From 1489, the Imperial Estates represented in the Diet were divided into three chambers, the college of prince-electors (Kurfürstenkollegium/den Kurfürstenrat), the college of imperial princes (Reichsfürstenrat) and the college of imperial cities. Counts and nobles were not directly represented in the Diet in spite of their immediate status, but were grouped into "benches" (Grafenbänke) with a single vote each.Imperial Knights and imperial villages had immediate status but were not represented in the Diet.

Prince Grigory Aleksandrovich Potemkin-Tauricheski (11 October [O.S. 30 September] 1739 – 16 October [O.S. 5 October] 1791) was a Russian military leader, statesman, nobleman, and favourite of Catherine the Great. He died during negotiations over the Treaty of Iași, which ended a war with the Ottoman Empire that he had overseen.

Potemkin was born into a family of middle-income landowners of Russian nobility. He first attracted Catherine's favor for helping in her 1762 coup, then distinguished himself as a military commander in the Russo-Turkish War (1768–1774). He became Catherine's lover, favorite and possibly her consort. After their passion cooled, he remained her lifelong friend and favored statesman. Catherine obtained for him the title of Prince of the Holy Roman Empire and gave him the title of Prince of the Russian Empire among many others: he was both a Grand Admiral and the head of all of Russia's land and irregular forces. Potemkin's achievements include the peaceful annexation of the Crimea (1783) and the successful second Russo-Turkish War (1787–1792), during which the armed forces under his command besieged Ochakov.

A prince is a male ruler (ranked below a king, grand prince, and grand duke) or a male member of a monarch's or former monarch's family. Prince is also a title of nobility (often highest), often hereditary, in some European states. The female equivalent is a princess. The English word derives, via the French word prince, from the Latin noun prīnceps, from primus (first) and caput (head), meaning "the first, foremost, the chief, most distinguished, noble ruler, prince".

In a related sense, now not commonly used, all more or less sovereign rulers over a state, including kings, were "princes" in the language of international politics. They normally had another title, for example king or duke. Many of these were Princes of the Holy Roman Empire.

The Archduchy of Austria (Latin: Archiducatus Austriae; German: Erzherzogtum Österreich) was a major principality of the Holy Roman Empire and the nucleus of the Habsburg monarchy. With its capital at Vienna, the archduchy was centered at the Empire's southeastern periphery.

Its present name originates from the Frankish term Oustrich – Eastern Kingdom (east of the Frankish kingdom). The archduchy developed out of the Bavarian Margraviate of Austria, elevated to the Duchy of Austria according to the 1156 Privilegium Minus by Emperor Frederick Barbarossa. The House of Habsburg came to the Austrian throne in Vienna in 1282 and in 1453 Emperor Frederick III, also the ruler of Austria, officially adopted the archducal title. From the 15th century onward, all Holy Roman Emperors but one were Austrian archdukes and with the acquisition of the Bohemian and Hungarian crown lands in 1526, the Habsburg hereditary lands became the centre of a major European power.

The Duchy of Austria (Latin: Austriae Ducatus; Middle High German: Herzogtum Österreich) 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.

Maximilian I (17 April 1573 – 27 September 1651), occasionally called the Great, a member of the House of Wittelsbach, ruled as Duke of Bavaria from 1597. His reign was marked by the Thirty Years' War during which he obtained the title of a prince-elector of the Holy Roman Empire at the 1623 Diet of Regensburg.

Maximilian was a capable monarch who, by overcoming the feudal rights of the local estates (Landstände), laid the foundations for absolutist rule in Bavaria. A devout Catholic, he was one of the leading proponents of the Counter-Reformation and founder of the Catholic League of Imperial Princes. In the Thirty Years' War, he was able to conquer the Upper Palatinate region, as well as the Electoral Palatinate affiliated with the electoral dignity of his Wittelsbach cousin, the "Winter King" Frederick V. The 1648 Peace of Westphalia affirmed his possession of Upper Palatinate and the hereditary electoral title, though it returned the Electoral Palatinate to Frederick's heir and created an eighth electoral dignity for them.