Alice of Courtenay
Alice of Courtenay, Countess of Angoulême( 1160 – 12 February 1218) was a French noblewoman of the House of Courtenay.
Her father was Peter I of Courtenay and her brother was Peter II of Courtenay, Latin Emperor of Constantinople.
Alice married twice; by her second husband, Aymer Taillefer, Count of Angoulême, she was the mother of Isabella of Angoulême, who was Queen consort of England, as the wife of King John.
She is also known as Alix de Courtenay.
Maria of Courtenay
Marie de Courtenay( c. 1204 – September 1228) was an Empress of Nicaea.
She was a daughter of Peter II of Courtenay and Yolanda of Flanders.
She married Theodore I of Nicaea.
Marie served as regent for her younger brother Baldwin II of Courtenay in 1228, and styled herself" Empress of Constantinople".
Robert of Courtenay, Lord of Champignelles
Robert of Courtenay , born (– 1239 Palestine) was lord of Champignelles and grandson of Louis VI of France.
Robert de Courtenay was the seventh child of ten children of Peter I of Courtenay (1126 – 1183) and his wife, Elizabeth de Courtenay.
Robert took part in the conquest of Normandy in 1204.
During the siege of Château Gaillard, he fought alongside his cousin Philip II of France.
In 1228, he left for a crusade to the Holy Land, where he died 11 years later in Palestine.
Peter of Courtenay, Lord of Conches
Peter of Courtenay ((– 1249 or 1250 in Egypt) was a French knight and a member of the Capetian House of Courtenay, a cadet line of the royal House of Capet.
From 1239 until his death, he was the ruling Lord of Conches-en-Ouche and Mehun-sur-Yèvre.
He was the eldest of five sons of Robert of Courtenay, Lord of Champignelles († 1239), and his wife Matilda of Mehun.
From his parents he inherited the castle of Conches and Mehun.
On 25 August 1248, he sailed with his cousin, King Louis IX of France, from Aigues-Mortes to Egypt to fight the Seventh Crusade, during which he died.
Most historians think he died during the battle for the city of Al Mansurah on 8 February 1250.
On that day, Count Robert I of Artois led a vanguard of Crusaders in a spontaneous attack on the city.
The vanguard was caught in a trap set by the defending Mamluks and all attackers were killed.
However, the chronicler Jean de Joinville maintains Peter of Courtenay died on an earlier date.
After the conquest of the Egytion port city of Damietta in June 1249, a large part of the crusader army camped outside the city wall, until they were ready to march to Al Mansurah in the autumn.
The Sultan of Egypt offered a reward of one gold solidus for the head of each crusader.
During the night, Saracens would sneak into the Crusader camp, kill sleeping Crusaders in their tents, and steal their severed heads.
According to Joinville, Peter of Courtenay was the victim of one such attack.
However, Joinville may be mistaken.
One should consider that he wrote his chronicle decades after the fact, and that Peter de Courtenay is mentioned twice later in the chronicle, in connection with the Battle of Al Mansurah.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Peter I of Courtenay
Peter I of Courtenay( September 1126 – 10 April 1183) was the youngest son of Louis VI of France and his second wife, Adélaide de Maurienne.
He was the father of the Latin Emperor Peter II of Courtenay.
Peter was born in France and died in Palestine.
In about 1150, he married Elizabeth de Courtenay( 1127 – September 1205), the daughter of Renaud de Courtenay and Hawise du Donjon, thus starting the Capetian line of the House of Courtenay.
Rumor has it that he is buried in a tomb in the floor of Exeter Cathedral, next to Elizabeth, however no physical evidence currently exists and the Historians at the Cathedral can find no documentation to support this rumor.
The couple had ten children:
Elisabeth of Courtenay
Elizabeth of Courtenay)( ca. 1199–1269 or later) was an Empress consort of Bulgaria, the daughter of Peter II of Courtenay and Yolanda of Flanders.
Elisabeth married Walter of Bar-sur- Seine( died 1219) and then Eudes I Lord of Montaigu.
Elizabeth and Eudes had:
Peter of Bergamo
Peter of Bergamo also called Peter of Almadura( 1400 ca.- 1482) was an Italian Dominican theologian.
Duke Peter of Oldenburg
Duke Constantine Frederick Peter of Oldenburg( 26 August 1812 in Yaroslavl, Russian Empire – 14 May 1881 in St. Petersburg, Russian Empire) was a Duke of the House of Oldenburg.
He was the grandfather of Duke Peter of Oldenburg as well as grandfather of Grand Duke Nicholas Nikolaevich, General of the Imperial Russian Army during World War I.
His great- great grandson, Nicholas Romanov, was the President of the Romanov Family Association until his death in 2014.
Peter of Oldenburg was a scholar and philanthropist.
He was also noted composer of music.
In 1857 he composed the music for Marius Petipa's ballet" La Rose, la Violette et le Papillon".
The" Pas d' Esclave" from the ballet" Le Corsaire", which is taken from his score for this work, is still heard in theatres all over the world.
Amicie de Courtenay
Amicie of Courtenay( 1250 – 1275) was a French noblewoman and a member of the Capetian House of Courtenay, a cadet line of the House of Capet.
Her father was Peter of Courtenay, Lord of Conches and Mehun( 1218- 1250); he fell in the Battle of Al Mansurah during the Seventh Crusade.
Amicie's mother was Pétronille of Joigny, the daughter of Gaucher de Joigny.
She married Count Robert II of Artois( 1250- 1302), together they had three children:

Question: Who is Peter Of Courtenay, Lord Of Conches's paternal grandfather?