Certainty: 2 Istvan III again took Sirmion & attacked Zeugminon, having Istvan IV murdered. When Istvan III again took Sirmion from the Byzantines and threatened Zeugminon, Manuel I sent him a letter threatening to avenge his breaking of oaths by repeating the successes he had achieved against Geza II. When the king ignored the letter and besieged Zeugminon, Manuel prepared for war. The constant offences of Istvan III made the emperor think again of putting Istvan IV on the throne, a policy he had abandoned. Istvan III and other Hungarian opponents of Istvan IV decided to put a stop to the years of warfare he had caused. They enquired for somebody in Zeugminon, where he was under siege, to poison him, and found Thomas, one of his attendants, unprincipled enough to take money to murder his master. When the ex-king was being bled, he soaked in poison the bandage which was placed on the wound. The poison spread throughout his body and he died
Certainty: 2 Manuel sent another Manuel Komnenos as ambassador to Russian princes.
Certainty: 2 Alexios Axouchos was sent as supreme commander to Cilicia against Nur al-Din & Toros.
Certainty: 2 Axouchos visited Kilic Arslan & showed himself a partisan of his, despite counselling from Manuel.
Certainty: 2 Axouchos later visited a Latin wizard, to condemn Manuel to lack of an heir.
Certainty: 2 Vladislav, a major Russian refugee, received property on the Danube once owned by another Vladislav.
Certainty: 2 Frederick of Germany, Heinrich of Austria, the Venetians & the sultan of Ikonion joined against Istvan.
Certainty: 2 Manuel sent an army under prominent commanders with a Danube fleet to relieve Zeugminon.
Certainty: 2 Despite illness of empress, Manuel reached the Danube, crossing by a ruse & personal example.
Certainty: 2 Capture of Zeugminon by the Hungarian king.
Certainty: 2 Ioannes Doukas conquered most of Dalmatia for the Byzantines.
Certainty: 2 Careful siege of Zeugminon by Manuel, balancing maintenance of siege with defence against relief force.
Certainty: 2 Andronikos Doukas played a heroic role in the capture of the city.
Certainty: 2 Manuel refused surrender of Zeugminon by zupans - though later they were imprisoned, not executed.
Certainty: 2 Andronikos (I) returned from Russia & was accepted in time to fight in the siege.
Certainty: 2 Manuel resettled Hungarians from Zeugminon, eventually made peace & returned home.
Certainty: 2 Manuel celebrated a triumph from the Akropolis to Hagia Sophia, not using the solid gold chariot.
Certainty: 2 Manuel bound the birth of a male child to his theological rectitude: Alexios (II) was born soon after.
Certainty: 2 Demetrios of Lampe stirred up the controversy over John 14.28.
Certainty: 1 Stone from the ruins of Zeugminon used to fortify Belgrade (a kind of revenge).
Certainty: 1 Soon after, an anticipatory march from Manuel forestalled another Hungarian outbreak.