Biography of Frederick I Barbarossa, Holy Roman Emperor

On March 4, 1152, Frederick I Barbarossa was elected Holy Roman Emperor. From the article:

"Biography of Frederick I

Fast Facts: Frederick I (Barbarossa)
•Known For: Holy Roman Emperor and Warrior King
•Also Known As: Frederick Hohenstaufen, Frederick Barbarossa, Emperor Frederick I of the Holy Roman Empire
•Born: Exact date unknown; circa 1123, birthplace thought to be Swabia
•Parents: Frederick II, Duke of Swabia, Judith, the daughter of Henry IX, Duke of Bavaria, known also as Henry the Black.
•Died: June 10, 1190 near Saleph River, Cilician Armenia
•Spouse(s): Adelheid of Vohburg, Beatrice I, Countess of Burgundy
•Children: Beatrice, Frederick V, Duke of Swabia, Henry VI, Holy Roman Emperor, Conrad, later renamed Frederick VI, Duke of Swabia, Gisela, Otto I, Count of Burgundy, Conrad II, Duke of Swabia and Rothenburg, Renaud, William, Philip of Swabia, Agnes
•Notable Quote: "It is not for the people to give laws to the prince, but to obey his mandate." (attributed)

Early Life
Frederick I Barbarossa was born in 1122 to Frederick II, Duke of Swabia, and his wife Judith. Barbarossa's parents were members of the Hohenstaufen dynasty and House of Welf, respectively. This provided him with strong family and dynastic ties that would aid him later in life. At the age of 25, he became the Duke of Swabia following his father's death. Later that year, he accompanied his uncle Conrad III, King of Germany, on the Second Crusade. Though the crusade was a tremendous failure, Barbarossa acquitted himself well and earned the respect and trust of his uncle.

King of Germany
Returning to Germany in 1149, Barbarossa remained close to Conrad and in 1152, he was summoned by the king as he lay on his deathbed. As Conrad neared death, he presented Barbarossa with the Imperial seal and stated that the 30-year-old duke should succeed him as king. This conversation was witnessed by the Prince-Bishop of Bamberg, who later stated that Conrad was in full possession of his mental powers when he named Barbarossa his successor. Moving quickly, Barbarossa garnered the support of the prince-electors and was named king on March 4, 1152.

As Conrad's 6-year-old son had been prevented from taking his father's place, Barbarossa named him Duke of Swabia. Ascending to the throne, Barbarossa wished to restore Germany and the Holy Roman Empire to the glory it had achieved under Charlemagne. Traveling through Germany, Barbarossa met with the local princes and worked to end the sectional strife. Using an even hand, he united the princes' interests while gently reasserting the power of the king. Though Barbarossa was King of Germany, he had not yet been crowned Holy Roman Emperor by the pope.

Marching to Italy
In 1153, there was a general feeling of dissatisfaction with the papal administration of the Church in Germany. Moving south with his army, Barbarossa sought to calm these tensions and concluded the Treaty of Constance with Pope Adrian IV in March 1153. By the terms of the treaty, Barbarossa agreed to aid the pope in fighting his Norman enemies in Italy in exchange for being crowned Holy Roman Emperor. After suppressing a commune led by Arnold of Brescia, Barbarossa was crowned by the Pope on June 18, 1155. Returning home that fall, Barbarossa encountered renewed bickering among the German princes.

To calm affairs in Germany, Barbarossa gave the Duchy of Bavaria to his younger cousin Henry the Lion, Duke of Saxony. On June 9, 1156, at Würzburg, Barbarossa married Beatrice of Burgundy. Next, he intervened in a Danish civil war between Sweyn III and Valdemar I the following year. In June 1158, Barbarossa prepared a large expedition to Italy. In the years since he was crowned, a growing rift had opened between the emperor and the pope. While Barbarossa believed that the pope should be subject to the emperor, Adrian, at the Diet of Besançon, claimed the opposite.

Marching into Italy, Barbarossa sought to reassert his imperial sovereignty. Sweeping through the northern part of the country, he conquered city after city and occupied Milan on September 7, 1158. As tensions grew, Adrian considered excommunicating the emperor; he died before taking any action. In September 1159, Pope Alexander III was elected and immediately moved to claim papal supremacy over the empire. In response to Alexander's actions and his excommunication, Barbarossa began supporting a series of antipopes beginning with Victor IV.

Traveling back to Germany in late 1162, to quell unrest caused by Henry the Lion, he returned to Italy the following year with the goal of conquering Sicily. These plans quickly changed when he was required to suppress uprisings in northern Italy. In 1166, Barbarossa attacked toward Rome at won a decisive victory at the Battle of Monte Porzio. His success proved short-lived, however, as disease ravaged his army and he was forced to retreat back to Germany. Remaining in his realm for six years, he worked to improve diplomatic relations with England, France, and the Byzantine Empire.

Lombard League
During this time, several of the German clergy had taken up the cause of Pope Alexander. Despite this unrest at home, Barbarossa again formed a large army and crossed the mountains into Italy. Here, he met the united forces of the Lombard League, an alliance of northern Italian cities fighting in support of the pope. After winning several victories, Barbarossa requested that Henry the Lion join him with reinforcements. Hoping to increase his power through the possible defeat of his uncle, Henry refused to come south.

On May 29, 1176, Barbarossa and a detachment of his army were badly defeated at Legnano, with the emperor believed killed in the fighting. With his hold over Lombardy broken, Barbarossa made peace with Alexander at Venice on July 24, 1177. Recognizing Alexander as pope, his excommunication was lifted and he was reinstated into the Church. With peace declared, the emperor and his army marched north. Arriving in Germany, Barbarossa found Henry the Lion in open rebellion of his authority. Invading Saxony and Bavaria, Barbarossa captured Henry's lands and forced him into exile.

Third Crusade
Though Barbarossa had reconciled with the pope, he continued to take actions to strengthen his position in Italy. In 1183, he signed a treaty with the Lombard League, separating them from the pope. Also, his son Henry married Constance, the Norman princess of Sicily, and was proclaimed King of Italy in 1186. While these maneuvers led to increased tension with Rome, it did not prevent Barbarossa answering the call for the Third Crusade in 1189.

Death
Working in conjunction with Richard I of England and Philip II of France, Barbarossa formed an immense army with the goal of retaking Jerusalem from Saladin. While the English and French kings traveled by sea to the Holy Land with their forces, Barbarossa's army was too large and was forced to march overland. Moving through Hungary, Serbia, and the Byzantine Empire, they crossed the Bosporus into Anatolia. After fighting two battles, they arrived at the Saleph River in southeast Anatolia. While stories vary, it is known that Barbarossa died on June 10, 1190, while jumping into or crossing the river. His death led to chaos within the army and only a small fraction of the original force, led by his son Frederick VI of Swabia, reached Acre.

Legacy
Over the centuries following his death, Barbarossa became a symbol for German unity. During the 14th century, there was a belief that he would rise from the imperial castle of Kyffhäuser. During World War II, the Germans launched a massive attack against Russia, which they dubbed Operation Barbarossa in honor of the medieval emperor."