Alphonso of Brienne
Alphonso of Brienne or Alphonse I de Brienne, called Alphonse d' Acre( c. 1228 – August 25, 1270) was the son of John of Brienne and Berengaria of León, born in Acre.
He was the Grand Butler of France in 1258.
By his marriage( bef. 1250) to Marie, Countess of Eu he became Count of Eu. He was also Grand Chamberlain of France, and died in Tunis on the Seventh Crusade.
He had at least two children by Marie:
Berengaria of León
Berengaria of León (1204 – 12 April 1237) was the third wife but only empress consort of John of Brienne, Latin Emperor of Constantinople.
According to the chronicle of Alberic of Trois-Fontaines, Berengaria was a daughter of Alfonso IX of León and Berengaria of Castile.
She was a younger sister of Ferdinand III of Castile and Alfonso of Molina.
Ann Trindade
Ann Trindade is a Principal Fellow in the History Department at the University of Melbourne, Victoria, Australia.
She was educated at Lady Margaret Hall, Oxford and is the author of a biography of Berengaria of Navarre.
Álvaro Núñez de Lara (died 1218)
Álvaro Núñez de Lara( 11701218) was a Castilian nobleman who played a key role, along with other members of the House of Lara, in the political and military affairs of the Kingdoms of León and Castile around the turn of the 13th century.
He was made a count in 1214, served as" alférez" to King Alfonso VIII of Castile, was the regent during the minority of King Henry I of Castile, and was" mayordomo"( steward) to King Alfonso IX of León.
He opposed Queen Berengaria of Castile and her son King Ferdinand III and supported the King of León during the war between the two countries of 1217 – 1218.
At the end of his life he was a knight of the Order of Santiago, in whose Monastery of Uclés he was buried.
Constance of Castile
Constance of Castile (1136 or 1140 - 4 October 1160) was Queen of France as the second wife of Louis VII, who married her following the annulment of his marriage to Eleanor of Aquitaine.
She was a daughter of Alfonso VII of León and Berengaria of Barcelona, but her year of birth is not known.
Sancha Raimúndez
Sancha Raimúndez of León( c. 1095/110228 February 1159) was a Leonese infanta, the daughter of Queen Urraca and Raymond of Burgundy and the older sister of Alfonso VII of León.
Sancha of León
Sancha of León( 8 November 1067) was a Queen of León.
John of Brienne
John of Brienne (1170 – 27 March 1237), also known as John I, was King of Jerusalem from 1210 to 1225 and Latin Emperor of Constantinople from 1229 to 1237.
He was the youngest son of Erard II of Brienne, a wealthy nobleman in Champagne.
John, originally destined for an ecclesiastical career, became a knight and owned small estates in Champagne around 1200.
After the death of his brother, Walter III, he ruled the County of Brienne on behalf of his minor nephew Walter IV (who lived in southern Italy).
The barons of the Kingdom of Jerusalem proposed that John marry their queen, Maria.
With the consent of Philip II of France and Pope Innocent III, he left France for the Holy Land and married the queen; the couple were crowned in 1210.
After Maria's death in 1212 John administered the kingdom as regent for their infant daughter, Isabella II; an influential lord, John of Ibelin, attempted to depose him.
John was a leader of the Fifth Crusade.
Although his claim of supreme command of the crusader army was never unanimously acknowledged, his right to rule Damietta (in Egypt) was confirmed shortly after the town fell to the crusaders in 1219.
He claimed the Armenian Kingdom of Cilicia on behalf of his second wife, Stephanie, in 1220.
After Stephanie and their infant son died that year, John returned to Egypt.
The Fifth Crusade ended in failure (including the recovery of Damietta by the Egyptians) in 1221.
John was the first king of Jerusalem to visit Europe (Italy, France, England, León, Castile and Germany) to seek assistance for the Holy Land.
He gave his daughter in marriage to Holy Roman Emperor Frederick II in 1225, and Frederick ended John's rule of the Kingdom of Jerusalem.
Although the popes tried to persuade Frederick to restore the kingdom to John, the Jerusalemite barons regarded Frederick as their lawful ruler.
John administered papal domains in Tuscany, became the "podestà" of Perugia and was a commander of Pope Gregory IX's army during Gregory's war against Frederick in 1228 and 1229.
He was elected emperor in 1229 as the senior co-ruler (with Baldwin II) of the Latin Empire, and was crowned in Constantinople in 1231.
John III Vatatzes, Emperor of Nicaea, and Ivan Asen II of Bulgaria occupied the last Latin territories in Thrace and Asia Minor, besieging Constantinople in early 1235.
John directed the defence of his capital during the months-long siege, with the besiegers withdrawing only after Geoffrey II of Achaea and united fleets from Italian towns defeated their fleet in 1236.
The following year, John died as a Franciscan friar.
Alfonso of Molina
Alfonso of León, Lord of Molina( 1202 – 6 January 1272) was an" infante"( prince) of León and Castile, the son of King Alfonso IX of León and his second wife Queen Berengaria of Castile.
He was the brother of King Ferdinand III of Castile and León, and father of Queen Maria of Molina, wife of King Sancho IV.
He became Lord of Molina and Mesa after his first marriage to Mafalda González de Lara, the heiress of those lands.
Peter I (bishop of León)
Peter I( Spanish" Pedro") was the bishop of León from about 1087 until his deposition around 1111.
During his episcopate, the city of León declined in importance relative to the city of Toledo.
Peter had to contend with the claim of the archbishops of Toledo that the diocese of León lay within their province, a claim approved by Pope Urban II in 1099.
In 1104, Peter successfully convinced Urban's successor, Paschal II, to grant León an exemption from metropolitan control on the basis of a forged document, the so- called" Division of Wamba".
Significantly, the dioceses of León and Oviedo had common interests at this time.
The only copies of the" Division" that support the Leonese claims emanate from the scriptorium of the cathedral of Oviedo under Bishop Pelagius, a notorious forger.
The original of the papal bull of exemption still survives in the cathedral of León.
When Duke Raymond of Galicia died on 20 September 1107 in his castle of Grajal in the diocese of León, Bishop Peter gave permission for his body to be brought back to Santiago de Compostela for burial.
Peter was present at the marriage of Queen Urraca of León and King Alfonso I of Aragon in Monzón in October 1109, for he witnessed the queen's grant of a" fuero" to the men of the land of León and Carrión on 29 September, while she was on her way to meet her groom.
He was with the royal court at Sahagún when it celebrated Christmas that year, for he signed a private document there on 21 December.
Civil war broke out in the new year between the partisans of Urraca and those of Alfonso.
After receiving a papal letter condemning her marriage on grounds of consanguinity, the queen sought the advice of some bishops, Peter among them.
They advised her to separate from her husband.
After the king of Aragon's victory in the battle of Candespina on 26 October 1111, Peter's advice to Urraca cost him his see; the partisans of Alfonso had him removed from office.
The diocese was briefly usurped by Archbishop Maurice of Braga, before Peter's nephew Diego was elected bishop.
Peter himself went into exile in Galicia, where he was still alive as of 13 June 1112.

Question: What nationality is Berengaria Of León's husband?
Answer: Jerusalem