Isabella of Bourbon
Isabella of Bourbon, Countess of Charolais( 1434 – 25 September 1465) was the second wife of Charles the Bold, Count of Charolais and future Duke of Burgundy.
She was a daughter of Charles I, Duke of Bourbon and Agnes of Burgundy, and the mother of Mary of Burgundy, heiress of Burgundy.
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.
Sibylla of Burgundy, Duchess of Burgundy
Sybilla of Burgundy( 1065 – 1103), was a French noble, Duchess consort of Burgundy by marriage to Eudes I, Duke of Burgundy.
She was a daughter of William I, Count of Burgundy and Stephanie.
She was married to Eudes I, Duke of Burgundy in 1080.
Children:
Otto I, Count of Burgundy
Otto I( between 1167 and 1171 – 13 January 1200) was Count of Burgundy from 1190 to his death and briefly Count of Luxembourg from 1196 to 1197.
He was the fourth son of Frederick I, Holy Roman Emperor, by his second wife Beatrice I, Countess of Burgundy, daughter of Count Renaud III.
Joan II, Countess of Burgundy
Joan II, Countess of Burgundy( 15 January 1292 – 21 January 1330), was Queen of France by marriage to Philip V of France, and ruling Countess of Burgundy and Countess of Artois.
She was the eldest daughter and heiress of Otto IV, Count of Burgundy, and Mahaut, Countess of Artois.
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.
Matilda II, Countess of Nevers
Matilda II, Countess of Nevers( 1234/35–1262), also known as Maud of Dampierre or Mathilda II of Bourbon, was a sovereign Countess of Nevers, Countess of Auxerre, Countess of Tonnerre and Lady of Bourbon.
She was a daughter of Archambaud IX of Bourbon and Yolande de Châtillon, Countess of Nevers.
As heiress to the counties of Nevers, Auxerre and Tonnerre, she was married off to Odo, Count of Nevers, the son and heir of Hugh IV, Duke of Burgundy.
By this marriage Odo reunited two important areas that had previously been united as the Duchy of Burgundy, but he died leaving no male heirs, and so the united territory passed to his brother Robert II, Duke of Burgundy.
After her father's death Matilda also became Lady of Bourbon.
With Odo she had three children:
Florine of Burgundy
Florine of Burgundy( 1083–1097) was a French crusader.
She was the daughter of Eudes I, Duke of Burgundy and Sybilla of Burgundy.
Her maternal grandfather was William I, Count of Burgundy.
Florine was married to Sweyn the Crusader, a son of Sweyn II of Denmark.
Joan III, Countess of Burgundy
Joan III of Burgundy( 1/2 May 1308 – 10/15 August 1347), also known as Joan of France was a reigning Countess of Burgundy and Artois in 1330 – 1349, She was also Duchess of Burgundy by marriage to Odo IV, Duke of Burgundy.
She was the eldest daughter of King Philip V of France and Countess Joan II of Burgundy.
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.

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