Question: Who is the maternal grandfather of Philip Of Ibelin (1180–1227)?

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.
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.
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)
Maria Komnene, Queen of Jerusalem
Maria Komnene or Comnena (Greek:
Μαρία Κομνηνή, c. 1154 – 1208/1217) was the second wife of King Amalric I of Jerusalem and mother of Queen Isabella I of Jerusalem.
She was the daughter of John Doukas Komnenos, sometime Byzantine "dux" in Cyprus, and Maria Taronitissa.
Her sister Theodora married Prince Bohemund III of Antioch, and her brother Alexios was briefly, in 1185, a pretender to the throne of the Byzantine Empire.
Philip of Ibelin (died 1304)
Philip of Ibelin( died 1304) was constable of Cyprus.
He was son of Baldwin of Ibelin, Seneschal of Cyprus and Alix, daughter of Walter III of Bethsan and Theodora Comnena- Lathoumnena.
He married c. 1253 to Simone de Montbéliard, granddaughter of Walter of Montbéliard and had issue:
Guy of Ibelin, seneschal of Cyprus
Guy of Ibelin
( French:" Guy d' Ibelin")( before 1306 – 1350/60) was seneschal of Cyprus from 1318 and a burgher of Venice from 30 December 1334.
He was the son of Philip of Ibelin( 1253 –1318), previous seneschal of Cyprus and Jerusalem by his second wife Maria of Giblet( d. 1331).
He was evidently held in high regard by King Hugh IV of Cyprus, since he is named in a royal decree from 1329 as a magnificus vir, in charge of four newly created priesthoods in the cathedral of Nicosia.
He married Margaret of Ibelin with papal dispensation in 1319.
They had three children:
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.
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.
Philip of Ibelin (1180–1227)
Philip of Ibelin (1180-1227) was a leading nobleman of the Kingdom of Cyprus.
As a younger son of Balian of Ibelin and the dowager queen Maria Komnene, he came from the high Crusader nobility of the Kingdom of Jerusalem.
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:

Answer: John Doukas Komnenos