Bosnia (early medieval)

Bosnia (Greek: Βοσωνα, romanized: Bosona, Serbo-Croatian: Босна, Bosna) in the Early Middle Ages to early High Middle Ages was a territorially and politically defined South Slavic entity. It was situated, broadly, around the upper and middle course of the Bosna river, between the valleys of the Drina river on the east and the Vrbas river on the west, which comprise a wider area of central and eastern modern-day Bosnia and Herzegovina.
The very nucleus where the first Bosnian state emerged and had developed is Visoko valley, surrounding a wider area of modern-day town of Visoko. This area will be known as župa Bosna, as nucleus of the zemlja Bosna. The early Bosnia, according to Vego and Mrgić, as well as Hadžijahić and Anđelić, was situated, broadly, around the Bosna river, between its upper and the middle course: in the south to north direction between the line formed by its source and the Prača river in the south, and the line formed by the Drinjača river and the Krivaja river (from Olovo, downstream to town of Maglaj), and Vlašić mountain in the north, and in the west to east direction between the Rama-Vrbas line stretching from the Neretva to Pliva in the west, and the Drina in the east, which is a wider area of central and eastern modern-day Bosnia and Herzegovina.
Confirmation of its emergence and territorial distribution comes from historiographical interpretation of late 13-14th century Chronicle of the Priest of Duklja in modern and post-modern scholarship, which situate the state around the Upper Bosna river and the Upper Vrbas river, including Uskoplje, Pliva and Luka. This also suggest that this distribution from the Bosna river valley into the Vrbas river valley is the earliest recorded. These three small parishes will later become a quintessence for emergence of Donji Kraji county, before they were reclaimed as Kotromanić's demesne, after 1416 and death of Hrvoje Vukčić Hrvatinić.
The western Balkans had been reconquered from "barbarians" by Roman Emperor Justinian (r. 527–565). Sclaveni (Slavs) raided the western Balkans, including Bosnia, in the 6th century. The first mention of a Bosnian entity comes from the De Administrando Imperio (DAI in further text), which mention Bosnia (Βοσωνα/Bosona) as a "small/little land" or a "small country" (χοριον Βοσωνα/horion Bosona,) within Serbian Principality, positioned in the upper course of the Bosna river.
Historical and archaeological information on early medieval Bosnia remains inadequate. According to DAI, Bosnia included two inhabited towns, Katera and Desnik. Katera has been thought to be identified as Kotorac near Sarajevo, however, according to Bulić 2013, archaeology refutes this. Katera may have been situated in the vicinity of modern-day Kotor Varoš, the potential site could be Bobac or Bobos, however, site only includes late medieval findings to date. Desnik remains wholly unidentified, but was thought to be near Dešanj. Hadžijahić wholly rejected the information about location of the two towns in Bosnia, arguing that the Greek preposition in the sentence is often erroneously translated (as "in" instead of "toward"), referring to two Serbian towns toward land of Bosnia. Relja Novaković also questioned why there was an additional mention of a land with own cities if they should be part of Serbia, concluding that Bosnia almost always was a separate country. Francis Dvornik stated to be, "most probable-and this is accepted by most historians of the period", initially formed as part of Croatia and later in mid-10th century was ruled by Serbia. Danijel Dzino considered that the "political and chronological context of this short passage could be connected with the rule of Časlav".
If DAI's kastra oikoumena does not designate inhabited towns, but ecclesiastical centers instead (in 6th century is mentioned Bestoen bishopric with several episcopal centers that belonged to Salonitan Archdiocese), as theorized by late Tibor Živković, the two towns in question might be Bistua (Zenica or Vitez) and Martar (probably Konjic). The existence of such centers is argued by Živković as evidence it was an independent state before 822.
By the late 9th and early 10th century, Bosnia was mostly Christianized by Latin priests from the Dalmatian coastal towns, though remote pockets remained unreached. After the East–West Schism (1054) the newly formed Roman Catholic Diocese of Bosnia was under jurisdiction of the Archbishop of Split, but until the end of the 12th century changed jurisdiction between Split (1060, 1182), Bar (1089-1100, 1199) and Dubrovnik (1102, 1124, 1153). According to Provinciale vetus (late 12th century), its civitas was Bosna (considered as Visoko), and in the mid-11th century was one of 19 bishopric civitas of the Kingdom of Croatia and Dalmatia. In the 11-12th centuries the "Latin rite Christianity was prevalent in the west, the north and in central Bosnia", while the "Orthodox faith was predominant in the eastern districts near Serbia and the River Drina".
Based on lack of information from not always reliable historical sources, which again are mainly about nearby polities and peoples, is often argued in historiography; that Northern and Northeastern Bosnia was captured by Carolingian Franks in the early 9th century and remained under their jurisdiction until 870s. In what is now eastern Herzegovina and Montenegro, semi-independent localities emerged under Serbian rule. In the late 9th or early 10th century Petar of Serbia pushed into Pagania, coming into conflict with Michael of Zahumlje. Croatian king Tomislav reintegrated parts of Western and Northern Bosnia, battling the Bulgarians in the Bosnian highlands (926). In 949, a civil war broke out in Croatia leading to the conquest of Bosnia by Časlav, but after his death in c. 940s/960s, it was possibly retaken by Michael Krešimir II of Croatia, or became politically independent. Bulgaria briefly subjugated Bosnia at the turn of the 10th century, after which followed period of Byzantine rule. In the early 11th century, Bosnia was briefly part of the state of Duklja. In 1019 Byzantine Emperor Basil II forced the Serb and Croat rulers (including Bosnians) to acknowledge Byzantine sovereignty, though this had little impact over the governance of Bosnia until the end of 11th century, for periods of time being governed by Croats or Serbs to the East. Noel Malcolm considered that a later political link to Croatia will be observed "by the Croatian title ban from the earliest times", but its use before the mid-12th century in sources (CPD) is probably an anachronism.
All these deductions aren't based on relevant and reliable information, as Danijel Dzino concludes:
Based on semi-mythical Chronicle of the Priest of Duklja (CPD, 13-14th century, and mostly its Slavic redaction), the earliest mythical rulers of Transmontana (zagorska sklavinija) would be Silimir, Bladin, Ratimir (d. 838), followed by four unnamed rulers, then Satimir (c. 860 – c. 877), Budimir (877–917) and finally ban Svetolik-Stjepan (917 – d. 932/934). Svetolik-Stjepan fled to Hungary because Bosnia was conquered by Croatian king Crescimirus (Krešimir I or Michael Krešimir II), and that Crescimirus's son Stjepan (Stephen Držislav) and his descendants ruled over "White Croatia" and Bosnia. Samuel of Bulgaria (997–1014) during his conquest of Croatia moved freely through Bosnia and Serbia (which probably captured as well), but is without further evidence.
Later, according to the same CPD, Ljutovid of Zahumlje, an unnamed Ban of Bosnia, and unnamed župan of Raška (i.e. Serbia) accepted Byzantine's gifts in silver and gold to assist Michael Anastasii against Stefan Vojislav at the Battle of Bar (1042). Constantine Bodin reportedly conquered Bosnia and appointed first cousin Stephen (fl. 1084–1095) as the duke of Bosnia, and Stephen reportedly participated in the siege of Dubrovnik but there's "a number of inconsistencies and chronological problems".
According to later Annales Ragusini (14-17th century), the death of childless Stiepan in 871 was followed by 17 years war which was ended by Croatian ruler Bereslav's conquest of Bosnia, while in 972 Bosnian ruler was killed and land conquered by certain Sigr. Ducha d'Albania, but another ruler of the lineage of Moravia de Harvati (and related to previous Bosnian ruler) expelled Sigr. Ducha and united Bosnia.
First reliable information about Bosnia dates from the early 12th century. Béla II of Hungary in 1135 adopted the title of King of Rama (possibly referring to Bosnia), and appointed his second son Ladislaus II of Hungary as Duke of Bosnia (Boznensem ducatum). With presumed Hungarian conquest and political influence, in the mid-12th century emerged Banate of Bosnia under its first ruler Ban Borić (fl. 1154–1163). After the Battle of Sirmium (1165–1167), the Byzantine–Hungarian treaty regards Bosnia "as part of Hungarian dominion taken by the Byzantines", and Byzantine emperor Manuel I Komnenos used in honorific title of the "dalmatikos, ougrikos, bosthnikos, krobatikos", and panegyric of Michael Anchialos mentioned to "let the Croat and the Bosnian be enrolled in the tables of the Romans". After 13 years of Byzantine rule, and Hungarians re-gained their South Slavic possessions, with Ban Kulin (1180–1204), Bosnia was by practical means an independent state, but that was constantly challenged by Hungarian kings who tried to reestablish their pre-Byzantine period authority or acted as "political seniors".
In the Early Middle Ages, Fine Jr. and Malcolm believe that westernmost parts of modern-day Bosnia and Herzegovina were part of Duchy of Croatia, while the easternmost parts were part of Principality of Serbia, although, the harsh and usually inaccessible elevated terrains of the country most likely never came under direct control of either of the two neighboring Slavic states, and instead always had its own distinct political governance. This is reinforced by the Byzantine historian John Kinnamos (mid-12th century), who wrote:
According to Martin Dimnik, writing for The New Cambridge Medieval History, in the 11th century land of Bosnia lived both Croats and Serbs. Regarding the ethnic identity of the inhabitants of Bosnia until 1180, Malcolm concludes "it cannot be answered, for two reasons":