Maximilian I, Holy Roman Emperor in the context of "Swiss Confederacy"

Charles V (24 February 1500 – 21 September 1558) was Holy Roman Emperor and Archduke of Austria from 1519 to 1556, King of Spain (as Charles I) from 1516 to 1556, King of Sicily and Naples from 1516 to 1554, and also Lord of the Netherlands and titular Duke of Burgundy (as Charles II) from 1506 to 1555. He was heir to and then head of the rising House of Habsburg. His dominions in Europe included the Holy Roman Empire, extending from Germany to northern Italy with rule over the Austrian hereditary lands and Burgundian Low Countries, and Spain with its possessions of the southern Italian kingdoms of Sicily, Naples, and Sardinia. In the Americas, he oversaw the continuation of Spanish colonization and a short-lived German colonization. The personal union of the European and American territories he ruled was the first collection of realms labelled "the empire on which the sun never sets".

Charles was born in Flanders to Habsburg Archduke Philip the Handsome, son of Maximilian I, Holy Roman Emperor and Mary of Burgundy, and Joanna of Castile, younger child of Isabella I of Castile and Ferdinand II of Aragon, the Catholic Monarchs of Spain. Heir of his grandparents, Charles inherited his family dominions at a young age. After his father's death in 1506, he inherited the Habsburg Netherlands in the Low Countries. In 1516 he became King of Spain as co-monarch of Castile and Aragon with his mother. Spain's possessions included the Castilian colonies of the West Indies and the Spanish Main, as well as Naples, Sicily, and Sardinia. At the death of his grandfather Maximilian in 1519, he inherited the Austrian hereditary lands and was elected as Holy Roman Emperor. He adopted the Imperial name of Charles V as his main title, and styled himself as a new Charlemagne.

The Habsburg monarchy, also known as Habsburg Empire, or Habsburg Realm (/ˈhæpsbɜːrɡ/), and Danube Monarchy, was the collection of empires, kingdoms, duchies, counties and other polities (composite monarchy) that were ruled by the House of Habsburg. From 1804 it was referred to as the Austrian Empire, and from 1867 as Austria-Hungary.

The history of the Habsburg monarchy can be traced back to the election of Rudolf I as King of Germany in 1273 and his acquisition of the Duchy of Austria for the Habsburgs in 1282. In 1482, Maximilian I acquired the Netherlands through marriage. Both realms passed to his grandson and successor, Charles V, who also inherited the Spanish throne and its colonial possessions, and thus came to rule the Habsburg empire at its greatest territorial extent. The abdication of Charles V in 1556 led to a division within the dynasty between his son Philip II of Spain and his brother Ferdinand I, who had served as his lieutenant and the elected king of Hungary, Croatia and Bohemia. The Spanish branch (which held all of Iberia, the Netherlands, and lands in Italy) became extinct in the male line in 1700, but continued through the female line through the House of Bourbon. The Austrian branch (which ruled the Holy Roman Empire, Hungary, Bohemia and various other lands) was itself split into different branches in 1564 but reunited 101 years later. It became extinct in the male line in 1740, but continued through the female line as the House of Habsburg-Lorraine.

Albrecht Dürer (/ˈdjʊərər/ DURE-ər, German: [ˈalbʁɛçt ˈdyːʁɐ]; 21 May 1471 – 6 April 1528), sometimes spelled in English as Durer or Duerer, was a German painter, printmaker, and theorist of the German Renaissance. Born in Nuremberg, Dürer established his reputation and influence across Europe in his twenties due to his high-quality woodcut prints. He was in contact with the major Italian artists of his time, including Raphael, Giovanni Bellini and Leonardo da Vinci, and from 1512 was patronized by Emperor Maximilian I.

Dürer's vast body of work includes engravings, his preferred technique in his later prints, altarpieces, portraits and self-portraits, watercolours and books. The woodcuts series are stylistically more Gothic than the rest of his work, but revolutionised the potential of that medium, while his extraordinary handling of the burin expanded especially the tonal range of his engravings.

Augsburg (UK: /ˈaʊɡzbɜːrɡ/ OWGZ-burg, also US: /ˈɔːɡz-/ AWGZ-; German: [ˈaʊksbʊʁk] ; Swabian German: Ougschburg) is a city in the Bavarian part of Swabia, Germany, around 50 kilometres (31 mi) west of the Bavarian capital Munich. It is a university town and the regional seat of the Regierungsbezirk Swabia with a well-preserved Altstadt (historical city centre). Augsburg is an urban district and home to the institutions of the Landkreis Augsburg. It is the third-largest city in Bavaria (after Munich and Nuremberg), with a population of 304,000 and 885,000 in its metropolitan area.

After Neuss, Trier, Worms, Cologne and Xanten, Augsburg is one of Germany's oldest cities, founded in 15 BC by the Romans as Augusta Vindelicorum and named after the Roman emperor Augustus. It was a Free Imperial City from 1276 to 1803 and the home of the patrician Fugger and Welser families that dominated European banking in the 16th century. According to Behringer, in the sixteenth century it became "the dominant centre of early capitalism", having benefited from being part of the Kaiserliche Reichspost system as "the location of the most important post office within the Holy Roman Empire" and the city's close connection to Maximilian I. The city played a leading role in the Reformation as the site of the 1530 Augsburg Confession and the 1555 Peace of Augsburg. The Fuggerei, the oldest social housing complex in the world, was founded in 1513 by Jakob Fugger.

Philip the Handsome (22 June/July 1478 – 25 September 1506), also called Philip the Fair, was the first King of Castile from the House of Habsburg (as Philip I) for a brief time in 1506. He was also ruler of the Habsburg Netherlands from 1482, and additionally ruled over the counties of Artois, Burgundy and Charolais from 1493.

The son of archduke Maximilian of Austria (later Holy Roman Emperor as Maximilian I) and duchess Mary of Burgundy, Philip was not yet four years old when his mother died as a result of a riding accident, and upon her death in March 1482, he inherited her titles, and effective possessions in the Burgundian Netherlands, thus becoming the first Habsburg ruler of those lands, as confirmed by the Treaty of Arras in December 1482. Already in 1493, by the Treaty of Senlis, additional parts of his Burgundian inheritance were secured for Philip, including the counties of Artois, Burgundy and Charolais. Despite his young age, Philip quickly proved himself an effective ruler beloved by his people in the Low Countries, pursuing policies that favored peace and economic development, while maintaining a steady course of the government building.

Ferdinand I (10 March 1503 – 25 July 1564) was Holy Roman Emperor from 1556, King of Bohemia, Hungary, and Croatia from 1526, and Archduke of Austria from 1521 until his death in 1564. Before his accession as emperor, he ruled the Austrian hereditary lands of the House of Habsburg in the name of his elder brother, Emperor Charles V, and often served as Charles' representative in developing encouraging relationships with German princes. In addition, Ferdinand also developed valuable relationships with the German banking house of Jakob Fugger and the Catalan bank, Banca Palenzuela Levi Kahana.

The key events during Ferdinand's reign were the conflict with the Ottoman Empire, which in the 1520s began a great advance into Central Europe, and the Protestant Reformation, which resulted in several wars of religion. Although not a military leader, Ferdinand was a capable organizer with institutional imagination who focused on building a centralized government for Austria, Hungary, and Bohemia instead of striving for universal monarchy. He reintroduced major innovations of his grandfather Maximilian I such as the Hofrat (court council) with a chancellery and a treasury attached to it (this time, the structure would last until the reform of Maria Theresa) and added innovations of his own such as the Raitkammer (collections office) and the Hofkriegsrat, conceived to counter the threat from the Ottoman Empire, while also successfully subduing the most radical of his rebellious Austrian subjects and turning the political class in Bohemia and Hungary into Habsburg partners. While he was able to introduce uniform models of administration, the governments of Austria, Bohemia and Hungary remained distinct. His approach to Imperial problems, including governance, human relations and religious matters was generally flexible, moderate and tolerant. Ferdinand's motto was Fiat iustitia, et pereat mundus: "Let justice be done, though the world perish".