Question: Who is the maternal grandfather of Matilda Of Hainaut?

Knowledge 1: Matilda of Hainaut
Matilda of Hainaut (29 November 1293 – 1331) was the Princess of Achaea from 1313 to 1318.She was the daughter of Isabella of Villehardouin and her husband Florent of Hainaut.In 1299, while still a child, she had been married to Guy II de la Roche, Duke of Athens.Widowed in 1308, she was engaged to Charles of Taranto until 1313, when she remarried to Louis of Burgundy, who held the titular dignity of the long-extinct Kingdom of Thessalonica.The marriage was intended to unite the Angevin and Burgundian houses.So was the betrothal of the Empress Catherine II to Hugh V of Burgundy, Louis's elder brother.However, Charles of Valois, Catherine's father, nixed the marriage and instead married her to Philip of Taranto.It was in an effort to compensate the Burgundians that Philip renounced his claim to Achaea in favour of Matilda and gave her hand to Louis.From 1307, when Philip of Savoy relinquished his claim, to 1312, when Isabella of Villehardouin died, Achaea was disputed between two claimants: Isabella and Philip I of Taranto.In 1313, Philip granted it to Matilda, daughter of Isabella and her first husband Florent of Hainaut.On Isabella's death, however, Ferdinand of Majorca laid claim to the principality in right of his wife, Isabella of Sabran, the daughter of Isabella's younger sister Margaret of Villehardouin.The new couple quickly left for Greece to take possession of their fief, which was then occupied by their rival Ferdinand.At the Battle of Manolada on 5 July 1316, Ferdinand was vanquished and killed and Louis took control of the Elis.However, he was poisoned soon after, leaving a twice-widowed 23-year-old in charge of the Morea.It was soon disputed by the varying claimants and Matilda was solidly dispossessed of her fief by 1318, in which year John, Duke of Durazzo, an Angevin, abducted the princess and forced her to marry him.She did not give him children, however, and he repudiated her in 1321.Matilda married yet again to Hugh de La Palice and retired to Aversa, where she died in 1331. [SEP] Knowledge 2: Isabella of Villehardouin
Isabella of Villehardouin (1260/1263 – 23 January 1312) was sovereign princess of Achaea from 1289 to 1307.She was the elder daughter of William II of Villehardouin, Prince of Achaea, and of his third wife Anna, the second daughter of Michael II Komnenos Doukas, the despot of Epiros.
Knowledge 1: Matilda of Hainaut
Matilda of Hainaut (29 November 1293 – 1331) was the Princess of Achaea from 1313 to 1318.She was the daughter of Isabella of Villehardouin and her husband Florent of Hainaut.In 1299, while still a child, she had been married to Guy II de la Roche, Duke of Athens.Widowed in 1308, she was engaged to Charles of Taranto until 1313, when she remarried to Louis of Burgundy, who held the titular dignity of the long-extinct Kingdom of Thessalonica.The marriage was intended to unite the Angevin and Burgundian houses.So was the betrothal of the Empress Catherine II to Hugh V of Burgundy, Louis's elder brother.However, Charles of Valois, Catherine's father, nixed the marriage and instead married her to Philip of Taranto.It was in an effort to compensate the Burgundians that Philip renounced his claim to Achaea in favour of Matilda and gave her hand to Louis.From 1307, when Philip of Savoy relinquished his claim, to 1312, when Isabella of Villehardouin died, Achaea was disputed between two claimants: Isabella and Philip I of Taranto.In 1313, Philip granted it to Matilda, daughter of Isabella and her first husband Florent of Hainaut.On Isabella's death, however, Ferdinand of Majorca laid claim to the principality in right of his wife, Isabella of Sabran, the daughter of Isabella's younger sister Margaret of Villehardouin.The new couple quickly left for Greece to take possession of their fief, which was then occupied by their rival Ferdinand.At the Battle of Manolada on 5 July 1316, Ferdinand was vanquished and killed and Louis took control of the Elis.However, he was poisoned soon after, leaving a twice-widowed 23-year-old in charge of the Morea.It was soon disputed by the varying claimants and Matilda was solidly dispossessed of her fief by 1318, in which year John, Duke of Durazzo, an Angevin, abducted the princess and forced her to marry him.She did not give him children, however, and he repudiated her in 1321.Matilda married yet again to Hugh de La Palice and retired to Aversa, where she died in 1331. [SEP] Knowledge 2: Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Knowledge 1: Matilda of Hainaut
Matilda of Hainaut (29 November 1293 – 1331) was the Princess of Achaea from 1313 to 1318.She was the daughter of Isabella of Villehardouin and her husband Florent of Hainaut.In 1299, while still a child, she had been married to Guy II de la Roche, Duke of Athens.Widowed in 1308, she was engaged to Charles of Taranto until 1313, when she remarried to Louis of Burgundy, who held the titular dignity of the long-extinct Kingdom of Thessalonica.The marriage was intended to unite the Angevin and Burgundian houses.So was the betrothal of the Empress Catherine II to Hugh V of Burgundy, Louis's elder brother.However, Charles of Valois, Catherine's father, nixed the marriage and instead married her to Philip of Taranto.It was in an effort to compensate the Burgundians that Philip renounced his claim to Achaea in favour of Matilda and gave her hand to Louis.From 1307, when Philip of Savoy relinquished his claim, to 1312, when Isabella of Villehardouin died, Achaea was disputed between two claimants: Isabella and Philip I of Taranto.In 1313, Philip granted it to Matilda, daughter of Isabella and her first husband Florent of Hainaut.On Isabella's death, however, Ferdinand of Majorca laid claim to the principality in right of his wife, Isabella of Sabran, the daughter of Isabella's younger sister Margaret of Villehardouin.The new couple quickly left for Greece to take possession of their fief, which was then occupied by their rival Ferdinand.At the Battle of Manolada on 5 July 1316, Ferdinand was vanquished and killed and Louis took control of the Elis.However, he was poisoned soon after, leaving a twice-widowed 23-year-old in charge of the Morea.It was soon disputed by the varying claimants and Matilda was solidly dispossessed of her fief by 1318, in which year John, Duke of Durazzo, an Angevin, abducted the princess and forced her to marry him.She did not give him children, however, and he repudiated her in 1321.Matilda married yet again to Hugh de La Palice and retired to Aversa, where she died in 1331. [SEP] Knowledge 2: Michèle Kahn Spike
Michèle Kahn Spike is an American lawyer, historian, and lecturer.She graduated from Boston University School of Law in 1976 and became a member of the Bar of the State of New York in 1977, concentrating in international corporate law.From the late 1980s until 2011, she lived in Florence, Italy together with her husband, noted art historian John Spike.Since fall 2012 she has been teaching at the Marshall- Wythe School of Law at the College of William& Mary, and she was appointed as Visiting Professor of the Practice of Law in 2017.She is known for her biography of Matilda of Tuscany," Tuscan Countess: The Life and Extraordinary Times of Matilda of Canossa", which was published to favorable reviews in 2004.She also collaborated with John Spike on his study of Caravaggio and Mattia Preti.Spike has been a member of the Bar of the State of New York since 1977 and during those 40 years engaged in the practice of international corporate law.In the spring of 2015, in honor of the 900th anniversary of the death of Matilda of Canossa, Spike curated the exhibition, Matilda of Canossa and the Origins of the Renaissance, for the Muscarelle Museum of Art in coordination with the Marshall- Wythe School of Law at the College of William and Mary.The catalogue for that exhibition was published by the Muscarelle Museum of Art.In 2015, Spike also published, An Illustrated Guide to the ‘ One Hundred Churches ’ of Matilda of Canossa, Countess of Tuscany( Centro Di, Florence, 2015).In 2016, also in honor of the 900th anniversary of the death of the Countess, she curated the exhibition," Matilda di Canossa( 1046- 1115)La donna che mutò il corso della stori/ Matilda of Canossa( 1046- 1115) the Woman who Changed the Course of History" for the Casa Buonarroti in Florence.The catalogue, available in Italian and in English, was published by Centro Di, Florence.As a member of the Standing Commission on Anglican and International Peace with Justice Concerns of the Episcopal Church( USA) 2003- 2009, Spike participated in delegations to Palestine and Israel as well as to United Nations conferences in New York City and Amman, Jordan.Since 2005, Spike has been Chancellor to the Bishop of the Convocation of Episcopal Churches in Europe.She most recently lectured on the Rule of Law at the Jerusalem Peacebuilders Camp in Brattleboro, Vermont.

Answer: William II of Villehardouin