Career
George was a natural half-brother of Rostom of Imereti on whose death he succeeded in 1605, but his authority was seriously challenged by the energetic prince of Mingrelia, Levan II Dadiani, whose increasing influence over the western Georgian polities George tried to restrict without any success. In 1623, Levan, with a combined Mingrelian-Abkhaziann army, inflicted a heavy defeat upon the royal troops. This, however, failed to bring the feudal anarchy in Imereti to an end and the unrest continued.
Later in his reign, George III once again campaigned against Levan Dadiani, but was defeated and taken captive.
George III of Imereti was married to the certain Tamar (died 1639). Alexander III (1609-1601 March 1660), King of Imereti;
Rostom (fl 1619–1639);
Mamuka (died 1654), military commander;
Beri, Archbishop of Gelati as Svimeon Genateli (fl 1639);
Khvaramze (fl 1619–1626), married to Avtandil Saakadze (died 1629), son of Giorgi Saakadze.
