Philip I of Courtenay was titular Emperor of Constantinople

Latin Empire

The Latin Empire or Latin Empire of Constantinople is the name given by historians to the feudal Crusader state founded by the leaders of the Fourth Crusade on lands captured from the Byzantine Empire. It was established after the capture of Constantinople in 1204 and lasted until 1261...

 1273–1283. He was the son of Baldwin II of Constantinople

Baldwin II of Constantinople

Baldwin II of Courtenay was the last emperor of the Latin Empire of Constantinople.He was a younger son of Yolanda of Flanders, sister of the first two emperors, Baldwin I and Henry of Flanders...

 and Marie of Brienne

Marie of Brienne

Marie of Brienne was the Empress consort of Baldwin II of Courtenay, Latin Emperor of Constantinople.-Family:She was a daughter of John of Brienne and his third wife Berenguela of Leon. Marie was a younger, paternal half-sister of Yolande of Jerusalem...

.

In his youth, his father was forced to mortgage him to Venetian

Republic of Venice

The Republic of Venice or Venetian Republic was a state originating from the city of Venice in Northeastern Italy. It existed for over a millennium, from the late 7th century until 1797. It was formally known as the Most Serene Republic of Venice and is often referred to as La Serenissima, in...

 merchants to raise money for the support of his empire, which was lost to the Empire of Nicaea

Empire of Nicaea

The Empire of Nicaea was the largest of the three Byzantine Greek successor states founded by the aristocracy of the Byzantine Empire that fled after Constantinople was occupied by Western European and Venetian forces during the Fourth Crusade...

 in 1261.

By the Treaty of Viterbo

Treaty of Viterbo

The Treaty of Viterbo was a pair of agreements made by Charles I of Sicily with Baldwin II of Constantinople and William II Villehardouin, Prince of Achaea, on 27 May 1267, which transferred much of the rights to the Latin Empire from Baldwin to Charles.-Background:The recapture of Constantinople...

 in 1267, his father agreed to marry him to Beatrice of Sicily

Beatrice of Sicily

Beatrice of Sicily was the Empress consort of Philip of Courtenay, titular Latin Emperor of Constantinople.-Family:...

, daughter of Charles I of Sicily

Charles I of Sicily

Charles I , known also as Charles of Anjou, was the King of Sicily by conquest from 1266, though he had received it as a papal grant in 1262 and was expelled from the island in the aftermath of the Sicilian Vespers of 1282...

 and Beatrice of Provence

Beatrice of Provence

Beatrice of Provence , was a countess regnant of Provence. She was also a Queen consort of Sicily by marriage to King Charles I of Sicily....

. Her maternal grandparents were Ramon Berenguer IV, Count of Provence

Ramon Berenguer IV, Count of Provence

Ramon Berenguer IV , Count of Provence and Forcalquier, was the son of Alfonso II of Provence and Garsenda of Sabran, heiress of Forcalquier. After his father's death , Ramon was imprisoned in the castle of Monzón, in Aragon until he was able to escape in 1219 and claim his inheritance. He was a...

 and Beatrice of Savoy

Beatrice of Savoy

Beatrice of Savoy was the daughter of Thomas I of Savoy and Margaret of Geneva. She was Countess consort of Provence by her marriage to Ramon Berenguer IV, Count of Provence.-Family:...

.

The marriage was performed in October 1273 at Foggia

Foggia

Foggia is a city and comune of Apulia, Italy, capital of the province of Foggia. Foggia is the main city of a plain called Tavoliere, also known as the "granary of Italy".-History:...

; shortly thereafter, Baldwin died, and Philip inherited his claims on Constantinople. Although Philip was recognized as emperor by the Latin possessions in Greece, much of the actual authority devolved on the Angevin kings of Naples and Sicily

Kingdom of Naples

The Kingdom of Naples, comprising the southern part of the Italian peninsula, was the remainder of the old Kingdom of Sicily after secession of the island of Sicily as a result of the Sicilian Vespers rebellion of 1282. Known to contemporaries as the Kingdom of Sicily, it is dubbed Kingdom of...

. Philip and Beatrice had a daughter, Catherine

Catherine I of Courtenay

Catherine I of Courtenay was Titular Empress of Constantinople from 1283 to her death in 1307. In 1301, she became the second wife of Charles of Valois, by whom she had one son and three daughters; the eldest of these, Catherine II of Valois, Princess of Achaea succeeded her as titular...

 (25 November 1274 – 11 October 1307, Paris). Philip died in 1283.