Blanche de Brienne, b. ca. 1252 in Brienne le Chateau, Le Aube, France

Father: Jean de Brienne, b. ca. 1220 in Brienne le Chateau, Le Aube, France, d. 1296
Mother: Jeanne du Chateaudun, b. 1227 in Acre, Palestine, d. aft. 1252 in Jerusalem, Israel

Spouse: William de Fienes (2), b. ca. 1240, d. 11 July 1302

Father: Ingelram de Fienes, b. ca. 1220
Mother: Isabel Conde, b. ca. 1225 in Verberie sur Oise, France
Married.

Children:

  1. Margaret de Fiennes, b. ca. 1262, m. Edmond de Mortimer, ca. 1280 in England

Jean de Brienne, b. ca. 1230 in Brienne le Chateau, Le Aube, France, m. Marie de Coucy, aft. 1252, d. 1296

Father: John (Jean) de Brienne, b. ca. 1148 in Brienne le Chateau, Le Aube, France, d. 1237 in Constantinople, Turkey
Mother: Berengaria of Leon, b. ca. 1191 in Leon, Spain

Spouse: Jeanne du Chateaudun, b. 1227 in Acre, Palestine, d. aft. 1252 in Jerusalem, Israel

Married 1251.

Children:

  1. Blanche de Brienne, b. ca. 1252 in Brienne le Chateau, Le Aube, France, m. William de Fienes (2)

John (Jean) de Brienne, b. ca. 1170 in Brienne le Chateau, Le Aube, France, m. Stephanie of Armenia, d. 27 March 1237 in Constantinople, Turkey

Father: Erard II, Count of Brienne, d. 8 February 1191 in Acre, Israel, cause of death was the Siege of Acre
Mother: Agnes de Montfaucon, d. aft. 1186

Spouse: Marie de Montferrat, d. 1212, cause of death was possibly Puerperal fever

Married 1210

Children:

  1. Yolanda of Brienne (Isabella II of Jerusalem), b. 1212, m. Frederick II, Holy Roman Emperor, August 1225 in Acre, Israel, d. 25 April 1228 in Andria, Italy

Spouse: Berengaria of Leon, b. ca. 1191 in Leon, Spain

Father: Alfonso IX, King of Leon, b. 15 August 1171 in Zamora, Leon, Spain, d. 24 September 1230 in Villaneuva de Sarria, Lugo, Spain, He became King of Leon, 1188 in Leon, Spain
Mother: Berengeria of Castile, b. January 1175 in Burgos, Spain, d. 8 November 1246 in Burgos, Spain
Married ca. 1212 in Jerusalem, Israel.

Children:

  1. Marie of Brienne, b. April 1225 in Capua, Italy, m. Baldwin II, Latin Emperor, 1234, d. aft. 5 May 1275 in Italy
  2. Alphonso I of Brienne, Grand Butler of France, b. ca. 1228, m. Marie of Lusignan, bef. 1250, d. 25 August 1270 in Tunis, Tunisia, cause of death was the Seventh Crusade
  3. Jean de Brienne, b. ca. 1230 in Brienne le Chateau, Le Aube, France, m. Jeanne du Chateaudun, 1251, m. Marie de Coucy, aft. 1252, d. 1296
  4. Louis of Acre, Viscount of Beaumont, b. ca. 1235, m. Agnes de Beaumont, d. 1263

Erard II, Count of Brienne, d. 8 February 1191 in Acre, Israel, cause of death was the Siege of Acre

Father: Gautier II, Count of Brienne
Mother: Adéle of Soissons
At the beginning of the Siege of Acre the Crusaders believed they had won and scattered to plunder, but Saladin rallied and attacked the center of the Christian forces with very little resistance. The Crusader front descended into chaos and they began to flee. Erard's brother André, though gravely injured, tried to stop them but was thrown from his horse. All of his companions, including Erard, left him to die. 7000 Crusaders died during the Siege of Acre, which lasted almost two years, including Erard who died sixteen months after his brother.
Spouse: Agnes de Montfaucon, d. aft. 1186
Father: Amadeus II of Montfaucon
Mother: Beatrice of Grandson-Joinville
Married

Children:

  1. Walter (Gautier) III, Count of Brienne, m. Maria (Elvira, Albiria, Albinia, or Blanche) of Sicily, 1200, d. 14 June 1205 in Sarno, Salerno, Italy
  2. John (Jean) de Brienne, b. ca. 1148 in Brienne le Chateau, Le Aube, France, m. Marie de Montferrat, 1210, m. Berengaria of Leon, ca. 1212 in Jerusalem, Israel, d. 1237 in Constantinople, Turkey
  3. William of Brienne, Lord of Pacy-sur-Armançon, m. Eustachia de Courtenay, d. 1199
  4. Ida of Brienne, m. Arnoul of Reynel, Lord of Pierrefitte

Gautier II, Count of Brienne

We have both children listed as the children of Adéle of Soissons, but André is said to be the son of Gautier's second wife, so his mother may be Humbeline. That would also mean Erard is older. We simply guessed at his being younger based on his behavior during the Siege of Acre.
Spouse: Adéle of Soissons
Father: Jean de Soissons
Mother: Aveline de Pierrefonds
Married

Children:

  1. André of Brienne, b. ca. 1135, d. 4 October 1189 in Acre, Israel, cause of death was the Siege of Acre
  2. Erard II, Count of Brienne, m. Agnes de Montfaucon, d. 8 February 1191 in Acre, Israel, cause of death was the Siege of Acre

Amadeus II of Montfaucon

Father: Richard II of Montfaucon
Mother: Sophie of Montbéliard
He was Count of Montbéliard and Lord of Montfaucon. Amadeus married Beatrice of Grandson-Joinville and Osilie of Faucogney, but it is unclear which is the mother of the children. As Beatrice is listed as the mother of Agnes, she may be the mother of all three.

Children:

  1. Walter I of Montbéliard, d. 1210
  2. Richard III, Count of Montbéliard
  3. Agnes de Montfaucon, m. Erard II, Count of Brienne, d. aft. 1186

Baldwin III of Jerusalem, b. ca. 1131 in Jerusalem, Israel, d. 1162 in Beirut, Lebanon, cause of death was dysentery and consumption, He became King of Jerusalem, 1143 in Jerusalem, Israel

Father: Fulk V "The Young", b. 1092 in Anjou, France, d. 13 November 1142 in Jerusalem, Israel, Became King of Jerusalem. 1131 in Jerusalem, Israel
Mother: Melisende de Rethel, b. in Bourg, Rethel, France, d. 11 September 1161 in Maine, France
William of Tyre, who knew Baldwin personally, described him thus: "…He was taller than the average man, but his limbs were so well proportioned to his height that no feature seemed out of harmony with the whole. His features were comely and refined, his complexion florid, a proof of innate strength… His eyes were of medium size, rather prominent and sparkling. He had straight yellowish hair and wore a rather full beard on cheeks and chin. He was of somewhat full habit, although he could not be called fleshy like his brother or spare like his mother…"

Spouse: Theodora Kalusine Komnene, b. ca. 1145

Father: Isaac Komnenos, b. ca. 1113, d. aft. 1154
Mother: Eirene Diplosynadene
After Baldwin’s death Theodora retired to Acre. She was only 16 years old.
Married 1156