Frederick I Barbarossa was a German Holy Roman Emperor

Holy Roman Emperor

The Holy Roman Emperor is a term used by historians to denote a medieval ruler who, as German King, had also received the title of "Emperor of the Romans" from the Pope...

. He was elected King of Germany at Frankfurt on 4 March 1152 and crowned in Aachen

Aachen

Aachen has historically been a spa town in North Rhine-Westphalia, Germany. Aachen was a favoured residence of Charlemagne, and the place of coronation of the Kings of Germany. Geographically, Aachen is the westernmost town of Germany, located along its borders with Belgium and the Netherlands, ...

 on 9 March, crowned King of Italy

King of Italy

King of Italy is a title adopted by many rulers of the Italian peninsula after the fall of the Roman Empire...

 in Pavia

Pavia

Pavia , the ancient Ticinum, is a town and comune of south-western Lombardy, northern Italy, 35 km south of Milan on the lower Ticino river near its confluence with the Po. It is the capital of the province of Pavia. It has a population of c. 71,000...

 in 1155, and finally crowned Roman Emperor

Holy Roman Emperor

The Holy Roman Emperor is a term used by historians to denote a medieval ruler who, as German King, had also received the title of "Emperor of the Romans" from the Pope...

 by Pope Adrian IV

Pope Adrian IV

Pope Adrian IV , born Nicholas Breakspear or Breakspeare, was Pope from 1154 to 1159.Adrian IV is the only Englishman who has occupied the papal chair...

, on 18 June 1155, and two years later in 1157 the term "sacrum" (i.e. "holy") first appeared in a document in connection with his Empire. He was then also formally crowned King of Burgundy

King of Burgundy

The following is a list of the Kings of the two Kingdoms of Burgundy, and a number of related political entities devolving from Carolingian machinations over family relations.- Kings of the Burgundians :...

 at Arles

Arles

Arles is a city and commune in the south of France, in the Bouches-du-Rhône department, of which it is a subprefecture, in the former province of Provence....

 on 30 June 1178.