Question: Who is Guy Of Ibelin (Died 1304)'s paternal grandfather?

Knowledge 1: Guy of Ibelin (died 1304)
Guy of Ibelin (French: Guy d'Ibelin) (1250/1255 – 1304), of the Ibelin family, was Count of Jaffa and Ascalon during the latter part of the Crusades.He was the son of John of Ibelin (aka John of Jaffa) and Maria of Barbaron.He was Count in name only.His father, John of Jaffa, had died in 1266, after which the fragile truce with the Muslims collapsed, and Jaffa was captured by Baibars in 1268.John was probably succeeded by Guy's older brother James, who held the title of Count of Jaffa until his death in 1276, at which point the title passed to Guy.In 1299/1300, Guy was able to capture Jebail with a Genoese fleet, but held it only briefly.He also met with the Mongol leader Kutlushah in 1301, in an unsuccessful attempt to coordinate a military attack against the Muslims.In 1302 he and his family were captured by pirates while staying at their ancestral fiefdom in Episcopia, Cyprus.He died on February 14, 1304, and was buried in Nicosia, Cyprus, in a pauper's grave in accordance with his vows.Guy must have been held in high regard on the island, judging from the turmoil following his death reported by the chronicler Amadi. [SEP] Knowledge 2: John of Ibelin (jurist)
John of Ibelin (1215 – December 1266), count of Jaffa and Ascalon, was a noted jurist and the author of the longest legal treatise from the Kingdom of Jerusalem.He was the son of Philip of Ibelin, bailli of the Kingdom of Cyprus, and Alice of Montbéliard, and was the nephew of John of Ibelin, the "Old Lord of Beirut".To distinguish him from his uncle and other members of the Ibelin family named John, he is sometimes called John of Jaffa.
Knowledge 1: Guy of Ibelin (died 1304)
Guy of Ibelin (French: Guy d'Ibelin) (1250/1255 – 1304), of the Ibelin family, was Count of Jaffa and Ascalon during the latter part of the Crusades.He was the son of John of Ibelin (aka John of Jaffa) and Maria of Barbaron.He was Count in name only.His father, John of Jaffa, had died in 1266, after which the fragile truce with the Muslims collapsed, and Jaffa was captured by Baibars in 1268.John was probably succeeded by Guy's older brother James, who held the title of Count of Jaffa until his death in 1276, at which point the title passed to Guy.In 1299/1300, Guy was able to capture Jebail with a Genoese fleet, but held it only briefly.He also met with the Mongol leader Kutlushah in 1301, in an unsuccessful attempt to coordinate a military attack against the Muslims.In 1302 he and his family were captured by pirates while staying at their ancestral fiefdom in Episcopia, Cyprus.He died on February 14, 1304, and was buried in Nicosia, Cyprus, in a pauper's grave in accordance with his vows.Guy must have been held in high regard on the island, judging from the turmoil following his death reported by the chronicler Amadi. [SEP] Knowledge 2: John of Ibelin (died after 1250)
John of Ibelin(" Jean d' Ibelin", died after 1250) was a member of the House of Ibelin and a crusader to the Kingdom of Cyprus.He was the son of Baldwin of Ibelin, seneschal of Cyprus, and of Alice de Bethsan.He married Isabelle du Rivet, daughter of Aimery du Rivet and Echive de Saint- Omer.They had:
Knowledge 1: Guy of Ibelin (died 1304)
Guy of Ibelin (French: Guy d'Ibelin) (1250/1255 – 1304), of the Ibelin family, was Count of Jaffa and Ascalon during the latter part of the Crusades.He was the son of John of Ibelin (aka John of Jaffa) and Maria of Barbaron.He was Count in name only.His father, John of Jaffa, had died in 1266, after which the fragile truce with the Muslims collapsed, and Jaffa was captured by Baibars in 1268.John was probably succeeded by Guy's older brother James, who held the title of Count of Jaffa until his death in 1276, at which point the title passed to Guy.In 1299/1300, Guy was able to capture Jebail with a Genoese fleet, but held it only briefly.He also met with the Mongol leader Kutlushah in 1301, in an unsuccessful attempt to coordinate a military attack against the Muslims.In 1302 he and his family were captured by pirates while staying at their ancestral fiefdom in Episcopia, Cyprus.He died on February 14, 1304, and was buried in Nicosia, Cyprus, in a pauper's grave in accordance with his vows.Guy must have been held in high regard on the island, judging from the turmoil following his death reported by the chronicler Amadi. [SEP] Knowledge 2: Guy, Constable of Cyprus
Guy of Poitiers- Lusignan( 1275/80- 1303) was constable of Cyprus from 1298.He was the youngest son of Hugh III of Cyprus( 1267- 1284) and Isabella of Ibelin.He married Eschiva of Ibelin, Lady of Beirut.Their children were:

Answer: Philip of Ibelin