Principality of Serbia (Serbian: Кнежевина Србија/Kneževina Srbija) was one of the early medieval states of the Serbs, located in the western regions of Southeastern Europe. It existed from the 8th century up to c. 969–971 and was ruled by the Vlastimirović dynasty.
Its first ruler known by name was Višeslav, who started ruling around 780, while by that time (starting from the years 680–681), the Bulgarian state had taken the lands to the east. Vlastimir resisted and defeated the Bulgarian army in a three-year-war (839–842), and the two powers lived in peace for some decades. Vlastimir's three sons succeeded in ruling Serbia together, although for a limited time; Serbia became a key part in the power struggle between the Byzantines and Bulgarians, predominantly allied with the Byzantines, which also resulted in major dynastic wars for a period of three decades. The principality was annexed in 924 by Simeon I and subjected to Bulgarian rule until 933 when Serbian prince Časlav was established as ruler of the Serbian land, becoming the most powerful ruler of the Vlastimirović dynasty.
An important process during this period was the Christianization of the Serbs, completed by the establishment of Christianity as state-religion in the second half of the 9th century. The principality was annexed by the Byzantine Empire in c. 969–971 and ruled as the Catepanate of Ras. The main information of the history of the principality and Vlastimirović dynasty are recorded in the contemporary historical work De Administrando Imperio (written c. 948–949).
Background
Slavs (Sklavenoi) settled throughout the Balkans during the 6th and the 7th centuries, thus marking the end of the early Byzantine rule in those regions. The history of the early medieval Serbian principality and the Vlastimirović dynasty is recorded in the work De Administrando Imperio (On the Governance of the Empire, abbr. "DAI"), compiled by the Byzantine Emperor Constantine VII Porphyrogenitus (r. 913–959). The work mentions the first Serbian ruler, without a name (known conventionally as "Unknown Archon"), that led the White Serbs to southeastern Europe and received the protection of Emperor Heraclius (r. 610–641), prior to the Bulgar invasion (680). The Serbian ruler was titled "Prince (archon) of the Serbia" (αρχων Σερβλίας). The DAI mentions that this ruler was succeeded by a son, followed by a grandson, and historians generally accept the accounts of DAI on succession of princes from the same family, but their names are unknown until the coming of Višeslav (c. 780-800).
History
Višeslav, Radoslav and Prosigoj (780–830)
The time and circumstances of the first three Serbian rulers are almost unknown. The first of the dynasty known by name was Višeslav who began his rule around 780, being a contemporary of Charlemagne (fl. 768–814).
The Serbs at that time were organized into župe (sing. župa), a confederation of village communities (roughly the equivalent of a county), headed by a local župan (a magistrate or governor); the governorship was hereditary, and the župan reported to the Serbian prince, whom they were obliged to aid in war. According to DAI, "baptized Serbia" included the "inhabited cities" (kastra) of Destinikon (Δεστινίκον), Tzernabouskeï (Τζερναβουσκέη), Megyretous (Μεγυρέτους), Dresneïk (Δρεσνεήκ), Lesnik (Λεσνήκ), and Salines (Σαληνές), while the "small land" (χοριον/chorion) of Bosnia (Βοσωνα), part of Serbia, had the cities of Katera (Κατερα) and Desnik (Δέσνηκ). The other Serb-inhabited lands (or principalities) that were mentioned included the "countries" of Paganija, Zahumlje and Travunija, while the "land" of Duklja was held by the Byzantines (it was presumably settled with Serbs as well). Given the large territory, the Serbs most likely arrived as a small military elite which managed to organize and assimilate other already settled and more numerous Slavs. These polities bordered "Serbia" to the north. The exact borders of the early Serbian state are unclear.
Although Višeslav is only mentioned by name, the DAI mentions that the Serbs served the Byzantine Emperor and that they were at this time at peace with the Bulgars, whose neighbors they were and with whom they shared a common frontier. The First Bulgarian Empire, under Telerig, planned to colonize some of their lands with more Slavs from the neighbouring Berziti, as the earlier Bulgar expansion had caused massive Slav migrations and depopulation of Bulgaria — in 762, more than 200,000 people fled to Byzantine territory and were relocated to Asia Minor. The Bulgars were defeated in 774, after Constantine V learned of their planned raid. In 783, a large Slavic uprising took place in the Byzantine Empire, stretching from Macedonia to the Peloponnese, which was subsequently quelled by Byzantine patrikios Staurakios.
Višeslav was succeeded by his son Radoslav, then grandson Prosigoj, and one of these two most likely ruled during the revolt of Ljudevit Posavski against the Franks (819–822); according to Einhard's Royal Frankish Annals, written in 822, Ljudevit went from his seat at Sisak to the Serbs, with Einhard mentioning that for the Serbs "is said to be holding a great part of Dalmatia" (ad Sorabos, quae natio magnam Dalmatiae partem obtinere dicitur). According to Živković, the usage of the term Dalmatia in the Royal Frankish Annals to refer both to the land where Serbs ruled as well as to the lands under the rule of Croat duke, was likely a reflection of the Franks' territorial aspirations towards the entire area of the former Roman Province of Dalmatia.Though the described borders mark a large area, it is mostly a mountainous and inaccessible terrain, rugged with the high ranges of the Dinarides. Within this region, the Serbs settled only a small, isolated and mutually distant river valleys, karst fields and fertile basins. Those patches of the territory had fertile land, suitable for the agriculture, while the barely accessible, some mountain regions remained uninhabited. Višeslav's great-grandson Vlastimir began his rule during 830s, and he is the oldest Serbian ruler on which there is more substantial data.
Countering Bulgarian expansion (805–829)
In the east, the Bulgarian empire grew strong. In 805 Krum conquered the Braničevci, Timočani and Obotrites, to the east of Serbia, and banished their tribal chiefs and replaced them with administrators appointed by the central government. In 815, the Bulgarians and Byzantines signed a 30-year peace treaty, but in 818, during the rule of Omurtag (814–836), the Braničevci and Timočani together with other tribes of the frontiers, revolted and seceded from Bulgaria because of an administrative reform that had deprived them much of their local authority. The Timočani left the society (association, alliance) of the Bulgarian state, and sought, together with the Danubian Obotrites and Guduscani, protection from Holy Roman Emperor Louis the Pious (r. 813–840), and met him at his court at Herstal. The Timočani migrated into Frankish territory, somewhere in Lower Pannonia, and were last mentioned in 819, when they were persuaded by Ljudevit to join him in fighting the Franks. The Danubian Obotrites stayed in Banat, and resisted the Bulgars until 824 when nothing more is heard of them. Krum sent envoys to the Franks and requested that the precise boundary be demarcated between them, and negotiations lasted until 826, when the Franks neglected him. The Bulgars answered by subjugating the Slavs that lived in Pannonia. Then the Bulgars sent ships up the Drava river, and, in 828, devastated Upper Pannonia north of the Drava. There was more fighting in 829 as well, and, by this time, the Bulgars had conquered all of their former Slavic allies.
The Bulgarian state had a general policy of expansion in which they would first impose the payment of tribute on a neighboring people and the obligation of supplying military assistance in the form of an alliance (society), leaving them internal self-government and local rulers, and when the need for this kind of relationship expired, they would terminate the self-government of the said people and impose their direct and absolute power, integrating them fully into the Bulgarian political and cultural system.
Vlastimir, Mutimir and Prvoslav (830–892)
Vlastimir succeeded his father, Prosigoj, in c. 830. He united the Serbian tribes in the vicinity. The Serbs were alarmed, and most likely consolidated due to the spreading of the Bulgarian Empire towards their borders by the Bulgarian conquest of neighbouring Slavs, and possibly sought to cut off the Bulgar expansion to the south (Macedonia). Emperor Theophilos (r. 829–842) was recognized as the nominal suzerain (overlord) of the Serbs, and most likely encouraged them to thwart the Bulgars. The thirty-year-peace treaty between the Byzantines and Bulgars, signed in 815, was still in effect.
According to Constantine VII, the Serbs and Bulgars had lived peacefully as neighbours until the Bulgar invasion in 839 (in the last years of Theophilos). It is not known what exactly prompted the war, as Porphyrogenitus gives no clear answer; whether it was a result of Serbian-Bulgarian relations, i.e., the Bulgar conquest to the southeast, or a result of the Byzantine-Bulgarian rivalry, in which Serbia was allied with the Byzantines. According to Porphyrogenitus, the Bulgars wanted to continue their conquest of Slav lands and subjugate the Serbs. Presian I (r. 836–852) launched an invasion into Serbian territory in 839, which led to a war that lasted for three years, in which the victorious army of Vlastimir expelled Presian from Serbia; Presian lost a large number of his men, and made no territorial gains. The Serbs had an advantage in the forests and gorges. The defeat of the Bulgars, who had become one of the greater powers in the 9th century, shows that Serbia was an organized state, fully capable of defending its borders, and possessed a very high military and administrative organization. It is not known whether Serbia at the time of Vlastimir had a fortification system and developed military structures with clearly defined roles of the župan. After the victory over the Bulgars, Vlastimir's status rose, and according to Fine he went on to expand to the west, taking Bosnia, and Herzegovina (known as Hum). In the meantime; Braničevo, Morava, Timok, Vardar and Podrimlje were occupied by the Bulgars. Vlastimir married off his daughter to Krajina, the son of a local župan of Trebinje, Beloje, in ca. 847/848. With this marriage, Vlastimir elevated the title of Krajina to archon. The Belojević family was thus entitled to rule Travunia.
After Vlastimir's death, the rule was divided among his three sons: Mutimir, Strojimir and Gojnik. The brothers defeated the Bulgars once again c. 853-854, capturing Bulgarian prince Vladimir, son of Boris of Bulgaria. After that, Serbs and the Bulgarians concluded peace. During the following period, the Christianization of the Serbs was completed. Mutimir maintained the communion with the Eastern Church (Constantinople) when Pope John VIII invited him to recognize the jurisdiction of the bishopric of Sirmium.
The Serbs and Bulgarians adopted the Old Slavonic liturgy instead of the Greek. Sometime after defeating the Bulgarians, Mutimir ousted his brothers, who fled to Bulgaria. He kept Gopnik's son Petar Gojniković in his court, but he managed to escape to Croatia. Mutimir ruled until 890, being succeeded by his son Prvoslav. However, Prvoslav was overthrown by Petar who had returned from his exile in Croatia in c. 892.
Petar, Pavle and Zaharija (892–927)
The name Peter suggests that Christianity had started to permeate into Serbia, undoubtedly through Serbia's contacts with the Bulgarians and Byzantines. Peter secured himself on the throne (after fending off a challenge from Klonimir, son of Stojmir) and was recognized by Tsar Symeon I of Bulgaria. An alliance was signed between the two states. Already having Travunia's loyalty, Peter began to expand his state north and west. He annexed the Bosna River valley, and then moved west securing allegiance from the Narentines, a fiercely independent, pirateering Slavic tribe. However, Peter's expansion into Dalmatia brought him into conflict with Prince Michael of Zahumlje, who has also grown powerful, ruling the coastal Principality of Zachlumia.
Although allied to Simeon I of Bulgaria, Peter became increasingly disgruntled by the fact that he was essentially subordinate to him. Peter's expansion toward the coast facilitated contacts with the Byzantines, by way of the strategies of Dyrrhachium. Searching for allies against Bulgaria, the Byzantines showered Peter with gold and promises of greater independence if he would join their alliance - a convincing strategy. Peter might have been planning an attack on Bulgaria with the Magyars, showing that his realm had stretched north to the Sava river. However, Michael of Zahumlje forewarned Symeon of this plan, since Michael was an enemy of Peter, and a loyal vassal of Symeon. What followed was multiple Bulgarian interventions and a succession of Serb rulers.