Also known as Charles the Great, Charlemagne ruled as the king of the Franks, king of the Lombards, and emperor of the Romans at different time periods. Not surprisingly, he had a major impact during the Early Middle Ages as he went about uniting the majority of central and western Europe, for which he is called the Father of Europe.
Wilhelm II reigned as the King of Prussia and German emperor from 1888 to 1918. He is credited with promoting scientific innovation and building a blue-water navy, which strengthened Germany’s position as a great power. However, he was also responsible for getting his country involved in World War I, which eventually brought an end to the Hohenzollern dynasty’s rule.
Frederick III, German Emperor reigned as the king of Prussia and emperor of the German Empire from 9 March 1888 until his death on 15 June 1888. Although he played key roles during the Austro-Prussian, Second Schleswig, and Franco-Prussian wars, Frederick professed hatred for warfare and was willing to make the German Empire more liberal before his untimely death.
Otto I, Holy Roman Emperor, known for his ruthlessness, not only united the German empire by crushing all rebellious vassals, but also put an end to the attacks by the Magyars of Hungary. His strategy of making the German bishops feudal lords helped his cause of stabilizing his empire.
Sigismund, Holy Roman Emperor reigned as the king of Hungary and Croatia from 1387 to 1437. He also served as the king of Germany, king of Bohemia, king of Italy, and emperor of the Romans. Sigismund is best remembered for playing a key role in bringing about the Council of Constance, which ended the Papal Schism.
The Soldier King Frederick William I of Prussia is remembered for transforming his nation into a prosperous state. He was known for his simple lifestyle, as opposed to his father’s kingly excesses. His experience at the War of the Spanish Succession led him to strengthen Prussia militarily, too.
Charles the Fat reigned as the emperor of the Carolingian Empire between 881 and 887. During the same time period, he also served as the king of West Francia and Aquitaine, king of Italy, and king of East Francia and Alemannia. Although he was considered lethargic, Charles managed to reunite the entire Carolingian Empire after inheriting all of West Francia.
19 Ernest II
Ernest II, the eldest son of Duke Ernest I, had been the duke of Saxe-Coburg-Gotha. He was quite close to his brother, Prince Albert, consort to England’s Queen Victoria. Best known for his support of the German unification, he was also a skilled composer of operas and an avid sports lover.
Though completely blind since childhood, George V of Hanover, the only son of King Ernest Augustus, exerted his influence by constantly being at conflict with the Hanoverian parliament. His rejected of Prussia’s demands of unarmed neutrality led to Prussia’s invasion of Hanover. He spent his final years in exile.
William I, German Emperor reigned as the king of Prussia from 1861 until his death in 1888. He also reigned as the first German emperor from 1871 to 1888. He is credited with overseeing the unification of Germany and establishing the German Empire. William's reign also witnessed the brilliance of Otto von Bismarck, who served as the former's minister president.
Though he wasn’t a politically experienced ruler, Frederick William II’s reign as the king of Prussia proved to be beneficial for the country in terms of expansion. However, his excesses and his affinity for Protestantism made him unpopular. He patronized art and culture and even played the cello.
Frederick I of Prussia reigned as the King of Prussia from 1701 until his death in 1713. He crowned himself in 1701 in Königsberg and proclaimed himself King in Prussia. A patron of learning and arts, Frederick I is credited with founding the Academy of Arts in 1696 as well as the Academy of Sciences in 1700.
Frederick William IV of Prussia was the King of Prussia from 1840 until his death in 1861. He was the eldest son of Frederick William III of Prussia and his wife, Queen Louise. He was a staunch Romanticist and was a patron of several great German artists. He ascended to the throne upon the death of his father in 1840.
Otto of Greece was a Bavarian prince who reigned as the king of Greece from 1832 to 1862. He was largely unpopular throughout his reign as he failed to resolve Greece's poverty. He was deposed in 1862 and died in exile in 1867.
Frederick III, Holy Roman Emperor reigned as the Holy Roman Emperor from 1452 to 1493. He also ruled as the king of the Romans from 1440 until his death in 1493. Although he struggled to make prompt decisions, for which he was mocked during his lifetime, Frederick is now widely regarded as an effective ruler.
Henry VI of the Hohenstaufen dynasty was the Holy Roman Emperor in the 12th century. He was also the king of Germany and of Sicily, the latter through his marriage to Constance I. He failed in his attempt to make the crown of the Holy Roman Emperor a hereditary monarchy.