1206 Defeat of David on the Sangarius, by Theodore (I) Lascaris. Alexius badly beaten at Amisus by the sultan of Iconium or Rum in league with Theodore. David makes treaty with the emperor Henry of Romania, in the interest of his possessions. 1214 Theodore I attempts to reunite David’s territory to the empire of Nicæa. Death of David in defence of Sinope, besieged and captured by the Turks. Pontus assailed by the Turks. Colchis by the Georgians. 1216 Alexius compelled to declare himself a vassal of the sultan of Iconium. 1222 Death of Alexius. His son-in-law, =Andronicus (I) Ghidus=, succeeds, Joannes the eldest son being passed over. 1224 Treaty with Ala ad-Din, sultan of Iconium. Hayton, Turkish governor of Sinope, seizes a Trebizontine ship. Andronicus attacks Sinope; Ala ad-Din breaks treaty and attacks Trebizond. Andronicus drives him off and by a treaty frees himself from vassalage. 1226 Andronicus acknowledges himself vassal of Gela ad-Din, shah of Khwarizm. 1230 On defeat of Gela ad-Din by the Mongols, Andronicus renews vassalage to Iconium. The Iberian provinces of Trebizond unite with the new Iberian kingdom where King David still retains his independence against the Turks. 1235 Death of Andronicus. His brother-in-law, =Joannes (I) Auxuchus=, succeeds. 1238 Death of Joannes. His brother, =Manuel (I) the Great Captain=, succeeds. There is little information about the events of his reign, but he was a vassal of the Seljuks; and, after their defeat, in 1244, at Kusadac of the Mongol khan, Octar. 1263 =Andronicus II= succeeds his father. 1266 =George= succeeds his brother. The power of the Mongols and Seljuks in Asia Minor declines, and George frees himself from them. He attempts to conquer more territory but in 1280 is deserted by his nobles on an expedition and captured by the Turkomans. =Joannes III= succeeds. He is invited by a party in Constantinople, disgusted at Michael VIII’s union with the Latin church, to place himself at the head of the orthodox Christians and of the Greek Empire; but Joannes fears to do this. 1281 Michael sends George Acropolita, the historian, on a mission to Joannes to induce him to lay aside title of emperor of the Romans or accept matrimonial alliance with his family. It is unsuccessful. An insurrection at Trebizond deprives Joannes of his power, but he soon recovers it.