Question: Who is the paternal grandmother of Lewis Of Luxembourg?

Knowledge 1: Lewis of Luxembourg
Lewis of Luxembourg (or Louis II de Luxembourg; died 1443) was an Archbishop of Rouen, Bishop of Ely, and Cardinal.He was a younger son of John of Luxembourg, Lord of Beauvoir and Marguerite of Enghien.Lewis was elected archbishop of Rouen in 1436.He was the leading native administrator/collaborator with the Lancastrian regime in France.His niece Jacquetta was the wife of John of Lancaster, 1st Duke of Bedford, who acted as regent for his nephew Henry VI.As the Lancastrian position weakened, Lewis found his own fortunes and even personal safety becoming precarious.Although the city of Rouen did not fall to Charles VII of France until late 1449, well after Luxembourg's death, King Henry's government had long ago decided the archbishop needed and deserved remuneration and status based more securely in England.Thus he was provided to Ely 'in commendam' on 27 September 1437.This was the fifth wealthiest see in England, yet also amongst the smallest in terms of size or burden.He is not known ever to have visited it.He died on 18 September 1443. [SEP] Knowledge 2: John of Luxembourg, Lord of Beauvoir
John of Luxembourg ("Jean de Luxembourg")(– bef.2 July 1397, Italy), was Lord of Beauvoir (or Beaurevoir) and Richebourg, and also (as "John II")Count of Brienne and Conversano .He was a son of Guy I of Luxembourg, Count of Ligny and Mahaut de Châtillon (1335–1378), Countess of Saint-Pol.John married around 1387 with Margaret, Countess of Brienne, daughter of Louis of Enghien, heiress of the counties of Brienne and of Conversano, and the Lordship of Enghien.They had five children:
Knowledge 1: Lewis of Luxembourg
Lewis of Luxembourg (or Louis II de Luxembourg; died 1443) was an Archbishop of Rouen, Bishop of Ely, and Cardinal.He was a younger son of John of Luxembourg, Lord of Beauvoir and Marguerite of Enghien.Lewis was elected archbishop of Rouen in 1436.He was the leading native administrator/collaborator with the Lancastrian regime in France.His niece Jacquetta was the wife of John of Lancaster, 1st Duke of Bedford, who acted as regent for his nephew Henry VI.As the Lancastrian position weakened, Lewis found his own fortunes and even personal safety becoming precarious.Although the city of Rouen did not fall to Charles VII of France until late 1449, well after Luxembourg's death, King Henry's government had long ago decided the archbishop needed and deserved remuneration and status based more securely in England.Thus he was provided to Ely 'in commendam' on 27 September 1437.This was the fifth wealthiest see in England, yet also amongst the smallest in terms of size or burden.He is not known ever to have visited it.He died on 18 September 1443. [SEP] Knowledge 2: Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Knowledge 1: Lewis of Luxembourg
Lewis of Luxembourg (or Louis II de Luxembourg; died 1443) was an Archbishop of Rouen, Bishop of Ely, and Cardinal.He was a younger son of John of Luxembourg, Lord of Beauvoir and Marguerite of Enghien.Lewis was elected archbishop of Rouen in 1436.He was the leading native administrator/collaborator with the Lancastrian regime in France.His niece Jacquetta was the wife of John of Lancaster, 1st Duke of Bedford, who acted as regent for his nephew Henry VI.As the Lancastrian position weakened, Lewis found his own fortunes and even personal safety becoming precarious.Although the city of Rouen did not fall to Charles VII of France until late 1449, well after Luxembourg's death, King Henry's government had long ago decided the archbishop needed and deserved remuneration and status based more securely in England.Thus he was provided to Ely 'in commendam' on 27 September 1437.This was the fifth wealthiest see in England, yet also amongst the smallest in terms of size or burden.He is not known ever to have visited it.He died on 18 September 1443. [SEP] Knowledge 2: Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.

Answer: Mahaut de Châtillon