Philip of Montfort, Lord of Tyre
Philip Ι of Montfort,( d. 17 March 1270, Tyre) was Lord of La Ferté- Alais and Castres- en- Albigeois 1228 – 1270, Lord of Tyre 1246 – 1270, and Lord of Toron aft.
1240 – 1270.
He was the son of Guy of Montfort and Helvis of Ibelin( daughter of Balian of Ibelin).
Guy of Ibelin (1286–1308)
Guy of Ibelin( 1286–1308), Lord of Nicosia, was the son of Balian of Ibelin, seneschal of the kingdom of Cyprus, and of Alice of Lampron.
In 1303, with papal dispensation, he married his cousin Isabella of Ibelin, daughter of Baldwin of Ibelin and of Marguerite de Giblet.
Their only child was Alix of Ibelin, second wife of Hugh IV of Cyprus.
Guy was buried on September 8, 1308 in the Premonstratensian Abbey of Bellapais near Kyrenia, Cyprus.
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.
Balian of Ibelin (1240–1302)
Balian of Ibelin( 1240 – 1302), seneschal of Cyprus, was a son of Guy of Ibelin, constable of Cyprus, and Philippa Berlais.
He married Alice of Hetumids of Lampron, daughter of Escive de Poitiers( daughter of Raymond- Roupen) and they had:
Helvis of Ibelin
Helvis of Ibelin( after 1178 – before 1 June 1216) was a daughter of Balian of Ibelin and his wife, Maria Komnene, who was the dowager Queen of Jerusalem.
Helvis was a member of the House of Ibelin.
She was Lady of Sidon by her first and second marriage.
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.
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:
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:
Isabella of Ibelin (died 1315)
Isabella of Ibelin( died 1315) was the daughter of Baldwin of Ibelin( d. 1313), lord of Korakou, and of Marguerite de Giblet.
Philip of Ibelin (died 1318)
Philip of Ibelin( born c. 1255; died 25 November 1318, Nicosia) was Seneschal of the Kingdom of Cyprus.
As one of the sons of Philippa Barlais and her husband Guy of Ibelin, he was a member of the house of Ibelin.
He married to: 1. c. 1280 Maria, daughter of Vahran of Hamousse by Mary of Ibelin, without issue; 2. c. 1295
Maria Embriaco of Gibelletto( d. 1331)

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