Question: What nationality is Beatrice I, Countess Of Burgundy's husband?

Knowledge 1: Beatrice I, Countess of Burgundy
Beatrice I (1143 – 15 November 1184) was Countess of Burgundy from 1148 until her death, and was also Holy Roman Empress by marriage to Frederick Barbarossa.She was crowned empress by Antipope Paschal III in Rome on 1 August 1167, and as Queen of Burgundy at Vienne in August 1178. [SEP] Knowledge 2: Frederick I, Holy Roman Emperor
Frederick Barbarossa (1122 – 10 June 1190), also known as Frederick I, was the Holy Roman Emperor from 2 January 1155 until his death.He was elected King of Germany at Frankfurt on 4 March 1152 and crowned in Aachen on 9 March 1152.He was crowned King of Italy on 24 April 1155 in Pavia and emperor by Pope Adrian IV on 18 June 1155 in Rome.Two years later, the term ' ("holy") first appeared in a document in connection with his empire.He was later formally crowned King of Burgundy, at Arles on 30 June 1178.He was named ' by the northern Italian cities which he attempted to rule: Barbarossa means "red beard" in Italian; in German, he was known as ", which has the same meaning.Before his imperial election, Frederick was by inheritance Duke of Swabia (1147–1152, as Frederick III).He was the son of Duke Frederick II of the Hohenstaufen dynasty and Judith, daughter of Henry IX, Duke of Bavaria, from the rival House of Welf.Frederick, therefore, descended from the two leading families in Germany, making him an acceptable choice for the Empire's prince-electors.Historians consider him among the Holy Roman Empire's greatest medieval emperors.He combined qualities that made him appear almost superhuman to his contemporaries: his longevity, his ambition, his extraordinary skills at organization, his battlefield acumen and his political perspicacity.His contributions to Central European society and culture include the reestablishment of the ", or the Roman rule of law, which counterbalanced the papal power that dominated the German states since the conclusion of the Investiture Controversy.Frederick died in 1190 in Asia Minor while leading an army in the Third Crusade.
Knowledge 1: Frederick I, Holy Roman Emperor
Frederick Barbarossa (1122 – 10 June 1190), also known as Frederick I, was the Holy Roman Emperor from 2 January 1155 until his death.He was elected King of Germany at Frankfurt on 4 March 1152 and crowned in Aachen on 9 March 1152.He was crowned King of Italy on 24 April 1155 in Pavia and emperor by Pope Adrian IV on 18 June 1155 in Rome.Two years later, the term ' ("holy") first appeared in a document in connection with his empire.He was later formally crowned King of Burgundy, at Arles on 30 June 1178.He was named ' by the northern Italian cities which he attempted to rule: Barbarossa means "red beard" in Italian; in German, he was known as ", which has the same meaning.Before his imperial election, Frederick was by inheritance Duke of Swabia (1147–1152, as Frederick III).He was the son of Duke Frederick II of the Hohenstaufen dynasty and Judith, daughter of Henry IX, Duke of Bavaria, from the rival House of Welf.Frederick, therefore, descended from the two leading families in Germany, making him an acceptable choice for the Empire's prince-electors.Historians consider him among the Holy Roman Empire's greatest medieval emperors.He combined qualities that made him appear almost superhuman to his contemporaries: his longevity, his ambition, his extraordinary skills at organization, his battlefield acumen and his political perspicacity.His contributions to Central European society and culture include the reestablishment of the ", or the Roman rule of law, which counterbalanced the papal power that dominated the German states since the conclusion of the Investiture Controversy.Frederick died in 1190 in Asia Minor while leading an army in the Third Crusade. [SEP] Knowledge 2: Frederick V, Duke of Swabia
Frederick V of Hohenstaufen (Pavia, 16 July 1164 – 28 November 1170) was duke of Swabia from 1167 to his death.He was the eldest son of Frederick III Barbarossa and Beatrice I, Countess of Burgundy.
Knowledge 1: Beatrice I, Countess of Burgundy
Beatrice I (1143 – 15 November 1184) was Countess of Burgundy from 1148 until her death, and was also Holy Roman Empress by marriage to Frederick Barbarossa.She was crowned empress by Antipope Paschal III in Rome on 1 August 1167, and as Queen of Burgundy at Vienne in August 1178. [SEP] Knowledge 2: Frederick V, Duke of Swabia
Frederick V of Hohenstaufen (Pavia, 16 July 1164 – 28 November 1170) was duke of Swabia from 1167 to his death.He was the eldest son of Frederick III Barbarossa and Beatrice I, Countess of Burgundy.

Answer: Germany