Question: Who is John Of Caesarea's paternal grandmother?

Knowledge 1: John of Caesarea
John (died 1238/41) was the Lord of Caesarea from 1229 and an important figure in the kingdoms of Cyprus and Jerusalem.He was the only son of Walter III of Caesarea and Marguerite d'Ibelin, daughter of Balian of Ibelin.He was often called "the young lord of Caesarea" throughout his life to distinguish him from his father, who had been called "the old lord of Caesarea". [SEP] Knowledge 2: Walter III of Caesarea
Walter III (French: "Gautier"), sometimes called Walter de Brisebarre or Walter Grenier(bef. 1180 – 24 June 1229), was the Constable of the Kingdom of Cyprus from 1206 and Lord of Caesarea in the Kingdom of Jerusalem from 1216.He was the eldest son of Juliana Grenier, Lady of Caesarea, and Guy de Brisebarre.Since he was witnessing royal charters by 1195, he must have been born no later than 1180.In the 1220s he was generally referred to as "the old lord of Caesarea", although probably only in his fifties.He took part in two Crusades and in two civil wars on the side of the House of Ibelin.As a young man, Walter was frequently in attendance at the royal court.He witnessed charters of Henry I in 1195–96, Amalric II in 1198, and the regent John of Ibelin in 1206.On an act of Amalric's he is term "lord of Caesarea", although his mother was still living, as was her second husband, Aymar de Lairon, who subscribed as "lord of Caesarea" to the same charter of John of Ibelin witnessed by Walter.In 1200 and 1206 he was a witness on charters of his mother and Aymar.
Knowledge 1: John of Caesarea
John (died 1238/41) was the Lord of Caesarea from 1229 and an important figure in the kingdoms of Cyprus and Jerusalem.He was the only son of Walter III of Caesarea and Marguerite d'Ibelin, daughter of Balian of Ibelin.He was often called "the young lord of Caesarea" throughout his life to distinguish him from his father, who had been called "the old lord of Caesarea". [SEP] Knowledge 2: John Aleman
John Aleman( died after 1264) was the Lord of Caesarea( as John II) in the Kingdom of Jerusalem, exercising this right through his wife, Margaret, from at least 1243 until his death.He was the son of Garnier l' Aleman and Pavie de Gibelet, and the older brother of Hugh Aleman.John was active politically and militarily, although less influential than the previous lords of Caesarea had been.His maternal grandmother was Stephanie of Milly.The first reference to John as lord of Caesarea comes in the" Assizes of Jerusalem" of John of Ibelin.Therein John writes that his cousin, the lord of Caesarea, refused the bailliage( regency) of the kingdom in 1243, and instead the" Haute Cour" gave it to Queen Alice of Cyprus.Since his father- in- law, Lord John of Caesarea, was dead, this is probably a reference to Aleman.In April 1249 he and his wife sold six" casalia" near Acre to the Teutonic Knights.This included two — Seisor and Mergelcolon and Gedin—that he had inherited from his mother, and Beit Jann and Nahf.In 1253 they sold Al- Damun( and several villages in the vicinity) near Acre to the Hospitallers for 12,000 besants.In 1255 they also sold the Hospitallers everything they owned in Acre as well as the" casalia" of Chasteillon and Rout.On this occasion they were accepted into the lay confraternity of the order as" confrater" and" consoror".Some of the money from the sales to the Hospitallers was used to pay the dower of John's brother Hugh's wife, Isabelle de Tenremonde, of the family of the lords of Adelon.She confirmed the payment of part of her dower in an act of 1259.In 1254, after Louis IX of France and the Seventh Crusade had departed, John and some other barons of the kingdom wrote a letter to Henry III of England requesting aid.He is referred to in the letter as" John Asa, great lord of CaesareaJohannes Asa magnus dominus Caesareae").In 1257 John approved and confirmed a treaty made by the bailiff John of Arsuf with the citizens of trading city of Ancona.He does not appear again in contemporary records, but was still alive as late as 1264, when his son Hugh, the" heir of Caesarea", was killed in a fall from his horse.His second son, Nicholas, succeeded him.According to the" Lignages d' Outremer", John and Margaret had a third son named Thomas.John may have been alive when Sultan Baibars of Egypt conquered Caesarea for the last time in 1265.If so, he must have fled to Cyprus, where the subsequent lords of Caesarea resided.
Knowledge 1: Walter III of Caesarea
Walter III (French: "Gautier"), sometimes called Walter de Brisebarre or Walter Grenier(bef. 1180 – 24 June 1229), was the Constable of the Kingdom of Cyprus from 1206 and Lord of Caesarea in the Kingdom of Jerusalem from 1216.He was the eldest son of Juliana Grenier, Lady of Caesarea, and Guy de Brisebarre.Since he was witnessing royal charters by 1195, he must have been born no later than 1180.In the 1220s he was generally referred to as "the old lord of Caesarea", although probably only in his fifties.He took part in two Crusades and in two civil wars on the side of the House of Ibelin.As a young man, Walter was frequently in attendance at the royal court.He witnessed charters of Henry I in 1195–96, Amalric II in 1198, and the regent John of Ibelin in 1206.On an act of Amalric's he is term "lord of Caesarea", although his mother was still living, as was her second husband, Aymar de Lairon, who subscribed as "lord of Caesarea" to the same charter of John of Ibelin witnessed by Walter.In 1200 and 1206 he was a witness on charters of his mother and Aymar. [SEP] Knowledge 2: Blanche of Lancaster
Blanche of Lancaster (25 March 1342 – 12 September 1368) was a member of the English royal House of Plantagenet and the daughter of the kingdom's wealthiest and most powerful peer, Henry of Grosmont, 1st Duke of Lancaster.She was the first wife of John of Gaunt, the mother of King Henry IV, and the grandmother of King Henry V of England.

Answer: Juliana Grenier