JEAN de Brienne, son of ERARD [II] de Brienne & his wife Agnès de Montbéliard [Montfaucon] ([1170/75]-27 Mar 1237). "Johan de Briene" is named as brother of Gauthier de Brienne by William of Tyre (Continuator), after his brother Guillaume[310]. "Gualterius comes Brene" donated property to Beaulieu (Aube) by charter dated 1194 with the consent of "Willelmi et Johannis fratrum eius"[311]. The Chronicle of Alberic de Trois-Fontaines names "Iohannis frater eiusdem comitis [Galteri comitis Briennensis" when recording that he succeeded as Comte de Brienne after the death of his brother[312]. "Johannes comes Brene" donated property to Basse-Fontaine by charter dated Apr 1210[313]. His first marriage was arranged by Philippe II King of France, who gave him a dower of 40,000 silver pounds, a sum which was equalled by Pope Innocent III[314]. He landed at Acre 13 Sep 1210, was married to his first wife the next day, and was crowned 3 Oct 1210 at Tyre as JEAN King of Jerusalem by Albert Patriarch of Jerusalem[315]. "Iohannes…Latinorum Ierusalem rex decimus et comes Brena et domina Maria uxor mea regina" donated property to the church of the Holy Sepulchre, Jerusalem by charter dated 1 Jul 1211[316]. He retained the bailiship of the kingdom of Jerusalem after the death of his first wife[317], nominally in the name of his daughter. After a long siege, and with the help of western armies which were part of the Fifth Crusade, Damietta in Egypt was captured 5 Nov 1219 and added to the territory of the kingdom of Jerusalem[318]. Jean left the crusade in Feb 1220, intending to visit Armenia to claim the throne in the name of his second wife following the death of her father, but as both she and their infant son died before he sailed for Cilicia he had no further claim and abandoned the journey[319]. He arrived back with the Fifth Crusade 6 Jul 1221, which proceeded to march further into Egypt but was forced to retreat and return Damietta 8 Sep 1221[320]. After appointing Eudes de Montbéliard as regent, King Jean sailed from Acre in autumn 1222, to find a suitable husband for his daughter. He agreed to her marriage with Friedrich II King of Germany on condition that he continued as regent of Jerusalem for life. His son-in-law reneged on the promise immediately after the wedding, declaring himself king of Jerusalem[321]. He was appointed regent of the Latin empire of Constantinople, by agreement at Perugia in Apr 1229, and was crowned JEAN Emperor of Constantinople on his arrival in the city in 1231. The Chronicle of Alberic de Trois-Fontaines records the death in 1237 in Constantinople of "rex Iohannes"[322].
m firstly (Tyre 1210) MARIE Queen of Jerusalem, daughter of CORRADO Marchese di Monferrato & his third wife Isabelle Queen of Jerusalem (Tyre Summer 1192-1212). William of Tyre (Continuator) names her and specifies her parentage[323]. A continuator of Caffaro records the death in 1192 of "Conrado marchionis Montidferrati" leaving "uxore sua pregnante, ex quo nata est unica filia Maria"[324], which indicates that Maria must have been born in summer 1192, therefore after her mother's second marriage. She was known as "la Marquise", from her father's rank[325]. Her marriage was arranged by Philippe II King of France, who gave her husband a dower of 40,000 silver pounds, a sum which was equalled by Pope Innocent III[326]. She was crowned with her husband 3 Oct 1210 at Tyre[327]. William of Tyre (Continuator) records her death in childbirth within two years of her marriage[328].
m secondly ([23/30] Apr 1214) RITA [Stephanie] of Armenia, daughter of LEWON I King of Armenia & his first wife Isabelle --- (after 1195-Jun 1220). William of Tyre (Continuator) names her and her father when recording her marriage, specifying that she was the daughter of his first marriage[329]. The Chronique du Royaume de la Petite Arménie of Constable Sempad names "une fille encore en bas âge…Ritha" as Leo's daughter by his first marriage, stating that she was brought up by her paternal grandmother[330]. Smbat Sparapet's Chronicle records that "King Lewon gave his daughter Rita to the king of Jerusalem" in [27 Jan 1214/26 Jan 1215][331]. "Leo…rex Armenie" granted property to the Knights Hospitallers with the consent of "domini Rupini principis Antiochie…nepotis et heredis mei" by charter dated 23 Apr 1214, and declared having received a loan from the Knights Hospitallers by charter dated the same date, both documents specifying that they formed part of the arrangements for the marriage of "mee filie" and "regi Iherosolimitano"[332]. She claimed the throne on the death of her father, who had left the kingdom of Armenia to her half-sister. Her husband left the Fifth Crusade in Feb 1220 intending to visit Armenia to press her claim, but as both she and their infant son died before he sailed for Cilicia he abandoned the journey[333].
m thirdly (Toledo 1224) Infanta doña BERENGUELA de Castilla y León, daughter of don ALFONSO IX King of León & his second wife Infanta doña Berenguela de Castilla (1204-Constantinople 12 Apr 1237, bur Constantinople). The Chronicle of Alberic de Trois-Fontaines refers to the wife of "rex Ierusalem Iohannes" as daughter of "Berengaria" and "regi Legionensi id est regi Galicie" and in a later passage records the marriage of "rex Iohannes Ierosolimitanus" and "filia regis Gallicie, sororem Fernandi de Castella", but in neither place is she named[334]. The Chronique de Guillaume de Nangis records the marriage in 1223 of "le roi de Castille…sa sœur Bérengère, nièce de Blanche reine de France" and "Jean roi de Jérusalem"[335]. "Jehan fiuz le roy Jehan de Jherusalem, bouteillier de France" instituted masses for "nostre pere le roy Jehan de Jherusalem et empereur de Costantinoble…et madame Berangiere sa fame jadis nostre mere" in the church of St Paul, Paris by charter dated Oct 1294[336]. The necrology of Maubuisson records the death "II Id Apr" of "Berengaria imperatrix Constantinopolitane"