Question: Who is the paternal grandmother of Catherine Of Guelders?

Knowledge 1: Catherine of Guelders
Catherine of Guelders (ca. 1440 – Guelders, January 25, 1497), was regent of the Duchy of Guelders between 1477 and 1492.Catherine of Guelders was the fourth and youngest child of Arnold, Duke of Guelders (1410-1473) and Catherine of Cleves (1417–1479).<br>Until 1477, she led an inconspicuous life, in the shadow of her brother Adolf, at war with his father, and her sisters Mary, married to King James II of Scotland and Margaret, married to Frederick I, Count Palatine of Simmern.<br>Despite efforts by her father, no suitable husband was found for Catherine.<br>17th century theories that she was secretly married with Louis de Bourbon, Bishop of Liège, are now believed to be false.Everything changed for Catherine in 1477, when Charles the Bold was killed in the Battle of Nancy.Guelders had been under control of Charles the Bold since 1473, and now saw the chance to regain its independence.As her brother Adolf was in Flanders, the States of Guelders convinced him to appoint his sister Catherine as regent, pending his return.Catherine reluctantly agreed.But the regency lasted much longer than expected because Adolf was killed in battle on June 27, 1477.She then continued to rule as regent for his son Charles II, who was held with his sister Philippa by the Burgundians.Catherine became involved in the Guelderian War of Independence with Maximilian of Austria.In 1482, she was forced to conclude peace with Maximilian and to retire from politics.In 1492, she witnessed the regained independence of Guelders under her nephew Charles II, Duke of Guelders.<br>Catherine died in 1497 and was buried in the church of Geldern, where her grave can still be seen. [SEP] Knowledge 2: Arnold, Duke of Guelders
Arnold of Egmond (14 July 1410 – 23 February 1473) was Duke of Guelders, Count of Zutphen.Arnold was born in Egmond-Binnen, North Holland, the son of John II of Egmond and Maria van Arkel.On 11 July 1423, Arnold, still a boy, succeeded Duke Reinald IV.Arnold was the grandson of Reinald's sister, Johanna.Although the Emperor Sigismund had invested the Duke of Berg with the duchy of Gelders, Arnold retained the confidence of the Estates by enlarging their privileges, and enjoyed the support of Duke Philip of Burgundy.Arnold was betrothed, and afterwards united in marriage to Catherine of Cleves, a niece of Philip of Burgundy.Subsequently, however, Duke Arnold fell out with his ally as to the succession to the see of Utrecht, whereupon Philip joined with the four chief towns of Guelders in the successful attempt of Arnold's son Adolf to substitute his own for his father's authority.Arnold gave up his claim on Jűlich only after his defeat in 1444 by Gerhard VII, Duke of Jülich-Berg.When Charles the Bold became Duke of Burgundy in 1467, after rejecting a compromise, Adolph was thrown into prison.Arnold, against the will of the towns and the law of the land, pledged his duchy to Charles for 300,000 Rhenish florins (1471).Upon Arnold's death two years later at Grave, Charles took possession of the duchy, starting a series of wars that would last more than 70 years.
Knowledge 1: Catherine of Guelders
Catherine of Guelders (ca. 1440 – Guelders, January 25, 1497), was regent of the Duchy of Guelders between 1477 and 1492.Catherine of Guelders was the fourth and youngest child of Arnold, Duke of Guelders (1410-1473) and Catherine of Cleves (1417–1479).<br>Until 1477, she led an inconspicuous life, in the shadow of her brother Adolf, at war with his father, and her sisters Mary, married to King James II of Scotland and Margaret, married to Frederick I, Count Palatine of Simmern.<br>Despite efforts by her father, no suitable husband was found for Catherine.<br>17th century theories that she was secretly married with Louis de Bourbon, Bishop of Liège, are now believed to be false.Everything changed for Catherine in 1477, when Charles the Bold was killed in the Battle of Nancy.Guelders had been under control of Charles the Bold since 1473, and now saw the chance to regain its independence.As her brother Adolf was in Flanders, the States of Guelders convinced him to appoint his sister Catherine as regent, pending his return.Catherine reluctantly agreed.But the regency lasted much longer than expected because Adolf was killed in battle on June 27, 1477.She then continued to rule as regent for his son Charles II, who was held with his sister Philippa by the Burgundians.Catherine became involved in the Guelderian War of Independence with Maximilian of Austria.In 1482, she was forced to conclude peace with Maximilian and to retire from politics.In 1492, she witnessed the regained independence of Guelders under her nephew Charles II, Duke of Guelders.<br>Catherine died in 1497 and was buried in the church of Geldern, where her grave can still be seen. [SEP] Knowledge 2: Catherine of Cleves (1417–1479)
Catherine of Cleves (25 May 1417 – 10 February 1479) was Duchess of Guelders by marriage to Arnold, Duke of Guelders.She acted as regent of Guelders during the absence of her spouse in 1450.The Hours of Catherine of Cleves was commissioned for her.
Knowledge 1: Arnold, Duke of Guelders
Arnold of Egmond (14 July 1410 – 23 February 1473) was Duke of Guelders, Count of Zutphen.Arnold was born in Egmond-Binnen, North Holland, the son of John II of Egmond and Maria van Arkel.On 11 July 1423, Arnold, still a boy, succeeded Duke Reinald IV.Arnold was the grandson of Reinald's sister, Johanna.Although the Emperor Sigismund had invested the Duke of Berg with the duchy of Gelders, Arnold retained the confidence of the Estates by enlarging their privileges, and enjoyed the support of Duke Philip of Burgundy.Arnold was betrothed, and afterwards united in marriage to Catherine of Cleves, a niece of Philip of Burgundy.Subsequently, however, Duke Arnold fell out with his ally as to the succession to the see of Utrecht, whereupon Philip joined with the four chief towns of Guelders in the successful attempt of Arnold's son Adolf to substitute his own for his father's authority.Arnold gave up his claim on Jűlich only after his defeat in 1444 by Gerhard VII, Duke of Jülich-Berg.When Charles the Bold became Duke of Burgundy in 1467, after rejecting a compromise, Adolph was thrown into prison.Arnold, against the will of the towns and the law of the land, pledged his duchy to Charles for 300,000 Rhenish florins (1471).Upon Arnold's death two years later at Grave, Charles took possession of the duchy, starting a series of wars that would last more than 70 years. [SEP] Knowledge 2: Catherine of Cleves (1417–1479)
Catherine of Cleves (25 May 1417 – 10 February 1479) was Duchess of Guelders by marriage to Arnold, Duke of Guelders.She acted as regent of Guelders during the absence of her spouse in 1450.The Hours of Catherine of Cleves was commissioned for her.

Answer: Maria van Arkel