Question: What nationality is Florent Of Hainaut's mother?

Knowledge 1: Florent of Hainaut
Florent of Hainaut (also "Floris" or "Florence"; Hainaut, also spelled "Hainault")(c. 1255 – 23 January 1297) was Prince of Achaea from 1289 to his death, in right of his wife, Isabella of Villehardouin.He was the son of John I of Avesnes and Adelaide of Holland.From his father he received the stadholdership (government) of Zeeland.After he left Zeeland, he took up service with Charles II of Naples, who made him constable of the Kingdom of Naples.After his marriage with Isabella (16 September 1289), he had one daughter: Matilda.She would succeed him and her mother as princess.Florent settled with his wife in Morea.He negotiated the Treaty of Glarentsa with the Byzantine Empire in 1290.The situation for the Franks in Greece was hopeless by this time, however.The fall of the Angevins in Sicily meant that they were preoccupied with recouping territory there and few Western governments would send troops to defend Morea.Florent thus made peace and maintained it until 1293, when the Greeks retook Kalamata.Florent did not despair and did not reopen the war which had been ongoing until his succession: he instead sent an embassy in protest to Andronikos II Palaiologos, and the emperor returned Kalamata.In 1296, the Greeks retook the castle of Saint George in Arcadia.Florent besieged the castle, but died before it could be taken. [SEP] Knowledge 2: Adelaide of Holland
Adelaide of Holland (– buried 9 April 1284), Countess of Hainaut, was a Dutch regent.She was a daughter of Floris IV, Count of Holland and Matilda of Brabant.She was also a sister of William II, Count of Holland and King of Germany.She acted as regent for her nephew Count Floris V during his minority.
Knowledge 1: Florent of Hainaut
Florent of Hainaut (also "Floris" or "Florence"; Hainaut, also spelled "Hainault")(c. 1255 – 23 January 1297) was Prince of Achaea from 1289 to his death, in right of his wife, Isabella of Villehardouin.He was the son of John I of Avesnes and Adelaide of Holland.From his father he received the stadholdership (government) of Zeeland.After he left Zeeland, he took up service with Charles II of Naples, who made him constable of the Kingdom of Naples.After his marriage with Isabella (16 September 1289), he had one daughter: Matilda.She would succeed him and her mother as princess.Florent settled with his wife in Morea.He negotiated the Treaty of Glarentsa with the Byzantine Empire in 1290.The situation for the Franks in Greece was hopeless by this time, however.The fall of the Angevins in Sicily meant that they were preoccupied with recouping territory there and few Western governments would send troops to defend Morea.Florent thus made peace and maintained it until 1293, when the Greeks retook Kalamata.Florent did not despair and did not reopen the war which had been ongoing until his succession: he instead sent an embassy in protest to Andronikos II Palaiologos, and the emperor returned Kalamata.In 1296, the Greeks retook the castle of Saint George in Arcadia.Florent besieged the castle, but died before it could be taken. [SEP] Knowledge 2: Helena Angelina Komnene
Helena Angelina Komnene  was a daughter of the Greek "sebastokrator" John I Doukas, ruler of Thessaly in ca. 1268–1289, and a Greek princess of Aromanian Greek origin, known only by her monastic name, Hypomone.In 1275, the Byzantine Emperor Michael VIII Palaiologos sent a large army to subdue her recalcitrant father.The Byzantine army besieged John's capital of Neopatras, but he managed to flee and seek the aid of the Duke of Athens, John I de la Roche (r. 1263–1280).John I gave the necessary aid to the "sebastokrator", in exchange for the marriage of Helena to his brother, William I de la Roche, the future Duke of Athens (r. 1280–1287).The Duchy also acquired the towns of Siderokastron, Zeitounion, Gravia, and Gardiki as her dowry.The couple had a son, Guy II de la Roche (r. 1287–1308).Following William's death, Helena served as regent for her underage son until his coming of age.In 1289, she refused to recognize the suzerainty of the new Prince of Achaea, Florent of Hainaut, and the Angevin King of Naples, Charles II, as the common liege-lord of all Frankish states in Greece, had to force her to submit.In 1291 she married Hugh of Brienne, Count of Lecce, who became the "bailli" of the Athenian duchy.This allowed Helena once again to challenge Achaen suzerainty, and insist on her right to do homage directly to the King of Naples.Charles II vacillated, but in the end Florent of Hainaut prevailed, and when Guy II of Athens came of age in 1296, he recognized Florent and his wife, Isabella of Villehardouin, as his liege-lords.
Knowledge 1: Adelaide of Holland
Adelaide of Holland (– buried 9 April 1284), Countess of Hainaut, was a Dutch regent.She was a daughter of Floris IV, Count of Holland and Matilda of Brabant.She was also a sister of William II, Count of Holland and King of Germany.She acted as regent for her nephew Count Floris V during his minority. [SEP] Knowledge 2: Helena Angelina Komnene
Helena Angelina Komnene  was a daughter of the Greek "sebastokrator" John I Doukas, ruler of Thessaly in ca. 1268–1289, and a Greek princess of Aromanian Greek origin, known only by her monastic name, Hypomone.In 1275, the Byzantine Emperor Michael VIII Palaiologos sent a large army to subdue her recalcitrant father.The Byzantine army besieged John's capital of Neopatras, but he managed to flee and seek the aid of the Duke of Athens, John I de la Roche (r. 1263–1280).John I gave the necessary aid to the "sebastokrator", in exchange for the marriage of Helena to his brother, William I de la Roche, the future Duke of Athens (r. 1280–1287).The Duchy also acquired the towns of Siderokastron, Zeitounion, Gravia, and Gardiki as her dowry.The couple had a son, Guy II de la Roche (r. 1287–1308).Following William's death, Helena served as regent for her underage son until his coming of age.In 1289, she refused to recognize the suzerainty of the new Prince of Achaea, Florent of Hainaut, and the Angevin King of Naples, Charles II, as the common liege-lord of all Frankish states in Greece, had to force her to submit.In 1291 she married Hugh of Brienne, Count of Lecce, who became the "bailli" of the Athenian duchy.This allowed Helena once again to challenge Achaen suzerainty, and insist on her right to do homage directly to the King of Naples.Charles II vacillated, but in the end Florent of Hainaut prevailed, and when Guy II of Athens came of age in 1296, he recognized Florent and his wife, Isabella of Villehardouin, as his liege-lords.

Answer: Germany