Boris Kalamanos

[1][6] A group of aggrieved Hungarian lords elected "Counts Bors and Ivan"[7] king when Coloman the Learned's son and successor, Stephen II of Hungary, fell ill around 1128, according to the Illuminated Chronicle.

[3] At an assembly in Arad, the new king's wife, Helena of Rascia, ordered the massacre of all Hungarian lords whom she suspected of having been opposed to her husband's ascension.

[3] After Stephen II's death, Boris "laid claim to his father's kingdom"[10] and went to the Byzantine Empire, according to the contemporaneous Otto of Freising.

[12][11] However, Boris left the Byzantine Empire for Poland because the emperor did not provide him military assistance, according to Otto of Freising.

[13] In the ensuing battle, the united Hungarian and Austrian troops routed the army of Boris and his allies on the banks of the Sajó River on 22 July.

[17] In retaliation for Boris's support, Géza invaded Austria and defeated the army of Henry Jasomirgott, Duke of Bavaria, in the Battle of the Fischa on 11 September 1146.

When Géza, king of Hungary ... heard this, he sent ahead certain of his counts to inquire why and how this had been done, while he himself with a great throng of Hungarians followed them and hastened to the rescue of the castle.

Since the Germans had no consoling prospect of liberation from siege, because [Henry Jasomirgott] was tarrying in the upper parts of Bavaria and because [Conrad III] remained in remote places of his realm, they began to treat with the Hungarians for terms of peace.

... [A]fter conferring together they received from the king under oath the promise of three thousand pounds in weight [of gold], restored the castle to him, and themselves returned to their own homes.In Christmas 1146, Conrad III declared that he would lead a crusade to the Holy Land.

[24] Boris did not give up his plan, because he was informed that many Hungarian noblemen "would take him for their lord and, deserting the King, would cleave to him"[25] if he managed to return to Hungary, according to the Illuminated Chronicle.

[24] He approached Louis VII of France, who was also marching across Central Europe towards the Holy Land, emphasizing his hereditary right to the Hungarian throne.

[29] Upon Emperor Manuel's order, he pillaged the region of the Temes River at the head of a Byzantine army and forced a small Hungarian troop to flee.

[33] Boris's wife was a niece of Emperor Manuel I Komnenos, according to Odo of Deuil, but her name and family are unknown.