Vakhtang Gorgasali was a king of Iberia, natively known as Kartli (modern eastern Georgia) in the second half of the 5th and first quarter of the 6th century. Gorgasali is a sobriquet meaning in Iranian "wolf’s head". He led his people, in an ill-fated alliance with the Eastern Roman Empire, into a lengthy struggle against Sassanid Iranian hegemony, which ended in Vakhtang's defeat and weakening of the kingdom of Iberia. Tradition also ascribes him reorganization of the Georgian church and foundation of Tbilisi, Georgia’s modern capital.