King of Iberia
Adarnase IV (Georgian: ) (died 923), or Adarnase II, was a Georgian monarch of the Bagrationi dynasty who reigned in the late 9th and early 10th centuries. The son of the "Kouropalates" David I of Iberia, he ruled as duke of Lower Tao from 881 to 923, king ("mepe") of the Kingdom of the Iberians from 888 to 923 and "Kouropalates" of Iberia from 891 to 923, re-establishing the Georgian monarchy in 888, more than three centuries after the abolition of the Kingdom of Iberia by Sasanian Empire.
He succeeded his father to the duchy of Lower Tao, a border march between Byzantine Empire and Caucasus, when the latter was assassinated by Nasra of Tao-Klarjeti in 881. When the latter led a Byzantine invasion force to invade the Caucasus, Adarnase defeated him in 888 and became the first sovereign to take the title of ‘King of the Iberians’, to signal his independence from the Byzantine Empire. With the help of neighbouring Armenia, he consolidated his power and gained control over Kartli, as well as Byzantine recognition in 891 after killing Gurgen I of Tao. The reign of Adarnase IV was marked by a change in Georgia's political orientation, as it left the Byzantine sphere of influence to join Armenia and, by extension, a declining Abbasid caliphate. The king often became involved in Armenia's internal affairs and helped King Smbat I of Armenia to consolidate his own power.
A war against pro-Byzantine Abkhazia in 904 saw a powerful Adarnase attempt to annex western Georgia, leading to a conflict with Armenia. This diplomatic conflict escalated into open war in 905, an assassination attempt on Smbat I, and Adarnase's refusal to come to Armenia's help during Yusuf ibn Abi'l-Saj's invasion, an invasion that culminated in Smbat's death in 914. In the final years of his reign, he again changed his geopolitical alliance and allied himself with Byzantind to place Ashot II on the Armenian throne.
Adarnase IV was the founder of the Kingdom of the Iberians, the state that preceded the Kingdom of Georgia until 1008, and the direct ancestor of the Bagrationi dynasty who ruled Georgia until the 19th century.
The numbering of successive rulers in the early Bagratid period is very confused in that it moves between the different branches of the family. Hence, Adarnase, known as "IV" for being the fourth Adarnase as the prince of Iberia, is also known as "II" as a sovereign of Tao-Klarjeti and "I" as the king ("mepe") of Iberia.
Name.
The name Adarnase derives from Middle Persian "Ādurnarsēh", with the second component of the word ("Nase") being the Georgian attestation of the Middle Persian name "Narseh", which ultimately derives from Avestan "nairyō.saŋya-". The Middle Persian name "Narseh" also exists in Georgian as "Nerse". The name "Ādurnarsēh" appears in the Armenian language as "Atrnerseh".
Early life and duke of Tao.
Young ruler.
Adarnase was born in the second half of the 9th century, the only known son of the "Kouropalates" David I of Iberia. His father was formally a subject of the Byzantine Empire, as his title conferred by Emperor Basil I suggests, and ruled the Georgian lands of Tao and Iberia, making him the ruler of a large part of the Georgian lands for five years. He took advantage of Byzantium's campaigns towards Italy to assert his independence, allying himself with Ashot I of Armenia and the Abbasid Caliphate in a risky diplomatic strategy. In 881, at the instigation of Byzantium and the powerful nobleman Liparit Baghvashi, a conflict broke out between David I and Nasra of Tao-Klarjeti, a young cadet of the Bagrationi dynasty. David was murdered and Nasra captured his territories
Liparit Baghvashi and Ashot of Armenia succeeded in expelling Nasra, who took refuge in Constantinople, allowing the young Adarnase to succeed his father as Duke of Lower Tao. Byzantium refused to recognise him as the eldest of the Bagrations and gave the title of "Kouropalates" to his cousin Gurgen, continuing the Roman policy of dividing the balance of power in Caucasus, but the official reason being the young age of the new duke. Adarnase inaugurated his reign by building the cathedral of Bana (modern Şenkaya in Turkey) with the help of the architect Kvirike, whom he later appointed as the first bishop of Bana. Despite the fact that Adarnase's domains south of the Tao bordered the Byzantine Empire, he pursued a largely independent policy.
Victory over Byzantine.
In 885, Ashot I of Armenia was crowned King of Armenia, declaring his independence from the Byzantine Empire and his alliance with the Abbasid Caliphate. This prompted Byzantine Empire to launch an invasion of South Caucasus to re-establish its order and in 887, Prince Bagrat Anchabadze, in exile in Greece since the assassination of his father Demetrius II of Abkhazia, invaded the Georgian coast of the Black Sea with a Byzantine navy, killed the usurper reigning in his stead and had himself proclaimed King of Abkhazia, returning the Kingdom of Abkhazia to the control of the Byzantine Empire. In 888, Nasra also landed in Abkhazia to invade Iberia with Abkhazian troops.
After ravaging many Georgian provinces without much opposition, Nasra, reinforced by local nobles and the Alanian ruler Baqarat, attacked Samtskhe and Tao. Adarnase led a resistance and was supported by Ashot of Armenia, "Kouropalates" Gurgen and Liparit Baghvashi but his troops were considerably outnumbered by the pro-Byzantine forces. The two armies clashed on the banks of the Mtkvari in the province of Samtskhe and Adarnase inflicted a decisive defeat on the invaders. Nasra took refuge in the town of Aspindza, where he was captured and executed on the orders of Adarnase. The victory in 888 put an end to the Byzantine invasion of South Caucasus and secured the independence of Armenia and Georgian lands, while solidifying the domination of the Bagrationi dynasty branch of Lower Tao over Iberia. Liparit secured his recognition by Adarnase as Duke of Kldekari and formed a powerful principality that was a cause of civil instability until the 12th century.
Consolidation of power.
Adarnase's victory changed the course of Georgian history when, in 888, he declared himself ‘King’. This decision was not only a repetition of the similar decision by Ashot I of Armenia in 885, it symbolised the return of the royal monarchy to Georgia, which had been abolished when it was conquered by Sasanian Empire in 523, more than three centuries earlier. The establishment of the Kingdom of the Iberians formalised the claim of Adarnase and his lineage to Kartli, the province at the centre of modern Georgia and at the time at the centre of the ambitions of Abkhazia, Armenia, Kakheti, the Emirate of Tbilisi and Byzantine. The historian Valeri Silogava has surmised that Adarnase's crowning as king might have occurred, in a symbolic move, at the ancient Iberian capital of Mtskheta, as suggested by an "asomtavruli" inscription—probably a 17th-century reinstatement of an earlier epigraph—at the Samtavro Monastery.
The geopolitical importance of Adarnase's action has also been noted by modern historiography: by taking the title of king, he proclaimed his independence from the autocratic power of Byzantium, which did not allow any monarch within the empire other than the emperor. This also meant a new direction for the Bagrations' foreign policy, with Adarnase allying himself with Armenia and, by extension, with the Abbasid caliphate, despite the latter's decline. While the independence of the Kingdom of the Iberians was recognised by its neighbours, the status of relations between Adarnase and Armenia was unclear: according to the historian Hovhannes Draskhanakerttsi, Adarnase's policy merely followed that of Ashot of Armenia, marking a vassalage of the new king towards his Armenian neighbour, but Roin Metreveli assumed that relations were based on bilateral recognition and the Georgian king used Arab-Armenian diplomacy to declare his independence. 
Adarnase IV began a policy of expansion towards the south, fortifying the city of Shavsheti and attaching numerous Byzantine provinces to his kingdom, as far as Erzurum. The king's territories now included part of Kartli, Klarjeti and Tao, and he claimed power over the whole of eastern and southern Georgia. It is possible that this expansion took place with the agreement of Byzantium, which accepted the new situation in Caucasus and attempted a diplomatic reconciliation. Thus, in 891, when Adarnase entered into conflict with the "Kouropalates" Gurgen, Byzantium did not come to Gurgen's help.
Adarnase IV and Bagrat I of Klarjeti formed an alliance against Gurgen, who then ruled the neighbouring province of Samtskhe. In 891, the two sides clashed at the Battle of Mglinavi in the Artanuji valley, which resulted in Gurgen's defeat and the annexation of his domains to Klarjeti. Adarnase captured Gurgen as a hostage, but the latter died of his wounds. The Byzantine Empire then recognised him not only as King of the Iberians, but also as "Kouropalates" of Iberia, without changing Adarnase's pro-Armenian stance. Gurgen's sons nevertheless inherited the duchy of Upper Tao, which was officially subject to the Iberian kingdom but retained a large degree of autonomy.
Alliance with Armenia.
The alliance between Adarnase IV and Armenia was established in 891, following the death of Ashot I of Armenia, when the Georgian king attended the funeral of his ally. Visiting Armenia, he first visited the sparapet Abas, brother of the deceased king and governor of Kars, who himself announced his claims to the Armenian throne, but the latter, fearing Adarnass's support for the legitimate heir Smbat, imprisoned him and only released him following diplomatic negotiations with the Georgians. At Yerazgavors, Adarnase met a grieving Smbat and urged him to take active control of his kingdom in order to avoid its division: he dressed him in royal clothes and crowned him, formalising the recognition of Smbat I as the legitimate king of Armenia.
On his way back, Adarnase was again captured by Abas, who locked him up in the citadel of Kars. The Armenian Catholicos Gevorg II tried to negotiate his freedom by offering Abas two strategic towns, while Adarnase offered his eldest son David as a hostage in his place, in vain. Finally, King Smbat laid siege to Abas, before exchanging his freedom for that of his own youngest son Abas and control over the Vaspurakan.
In 895, Ahmad ibn Isa al-Shaybani, the Arab governor of Diyar Bakr, invaded southern Armenia. Smbat and Adarnase together formed a force of between 60,000 and 100,000 men to contain the invaders, but the latter managed to defeat them following the betrayal of the Gagik Apumrvan Artsrun. In 896, Muhammad Ibn Abi'l-Saj, the Sajid emir of Azerbaijan, invaded Armenia and asked for Adarnase's support. Adarnasse refused and came to Smbat's help again when Smbat lost Kars. When the emir died of illness in 901 and was succeeded by Devdad Ibn Muhamma, who made peace with the Christians, Adarnase took part in a celebratory banquet with his Armenian counterpart at Yerazgavors. In 899, as an act of friendship and to confirm relations between the two kings, Smbat in turn crowned Adarnase as King of the Iberians.
However, the situation gradually changed in South Caucasus. Prince Padla I of Kakheti and his successor Kvirike I became increasingly powerful in eastern Georgia and pursued a policy of friendship with the Emirate of Tbilisi and Sajids, while the nobles of Kartli took advantage of Adarnase's attention to the south to obtain a large measure of autonomy, which meant that the Iberian kingdom lost de facto control of the region. Around 900, Adarnase IV, seeing Armenia's inability to cope properly with the Arab invaders and to balance the growing powers of Kakheti and Abkhazia, himself began to have ambitions for total domination of South Caucasus.
War against Abkhazia.
Smbat's influence over the kingdom of Adarnase IV put it on a direct collision course with Abkhazia, whose king Constantine III remained a loyal ally of Byzantium. At the centre of the conflict was domination over Kartli, the strategic centre of South Caucasus and officially under the governance of Adarnase. In 904, Abkhazia invaded Kartli and a large army captured the crucial city of Uplistsikhe, before devastating the rest of the province. Adarnase and Smbat formed a united opposition front to defend Gugark, an Armenian-Georgian province to the south of Kartli, where the Iberian king camped with his Armenian counterpart.
In order to avoid a total invasion of Armenia, Smbat decided to enter into negotiations with Constantine III, without consulting Adarnase. During a round of talks, Adarnase hired Armenian soldiers to capture