() in
Harju County (). It was one of the largest
circular rampart fortresses and trading centers at the time. The geographical extent of Estonian territory during the early medieval period remains difficult to attest. The first known mention of the name in the form
Estonia appears in the 6th-century writings of
Cassiodorus, specifically in his
Variae (Book V, Letters 1–2). The ethnonym may be derived from the
Aestii, a group mentioned by
Tacitus in the 1st century AD. However, scholars suggest that at that stage, the term likely referred to
Baltic tribes inhabiting the region of present-day
Kaliningrad and western
Lithuania. By contrast, 13th-century Norse sagas explicitly used the term to indicate Estonians. Alternative early references include the 2nd-century
Geography by
Ptolemy, which has been interpreted as mentioning the
Oeselians among the coastal dwellers of the Baltic. Furthermore,
Saxo Grammaticus chronicles the participation of both
Curonians and Estonians in the
Battle of Bråvalla, fighting alongside the
Swedes against the
Danes. Notably, Saxo omits other Baltic groups, such as the
Letts and
Lithuanians, from this account. The name
Estonia may have originated from the
Aestii mentioned in the 1st century AD by
Tacitus. At that stage, however, the term likely indicated
Baltic tribes living in the area of western Lithuania and present-day
Kaliningrad. By the time of the Norse sagas in the 13th century, the term was apparently used specifically to indicate the Estonians. In the 1st century, political and administrative subdivisions began to emerge in Estonia. Two larger subdivisions appeared: the parish (
kihelkond) and the county (
maakond). The parish consisted of several villages. Nearly all parishes had at least one fortress. The defense of the local area was directed by the highest official, the parish elder. The county was composed of several parishes, also headed by an elder. By the 13th century the following major counties had developed in Estonia:
Saaremaa (Osilia),
Läänemaa (Rotalia or Maritima),
Harjumaa (Harria),
Rävala (Revalia),
Virumaa (Vironia),
Järvamaa (Jervia),
Sakala (Saccala), and
Ugandi (Ugaunia). During the 10th and 11th centuries, numerous silver items entered the region to be traded, including dirham silver coins and various
Viking commodities, which is evidenced by Estonia having one of the highest densities of coin hoards in the Baltic region. Scholars suggest that local elites likely maintained control over strategic points along a
trade route from the Varangians to the Greeks, facilitating and profiting from the flow of bullion between the Abbasid Caliphate and Northern Europe. While the oldest Arabic dirham silver coins from the region date. back to the 8th century, the majority of hoards originate from the 11th and 12th centuries. Notable
Viking Age hoards have been discovered at
Maidla and
Kose. File:DirhamsEstonia.jpg|From
Dirham hoards in Estonia, 8th–11th centuries File:KumnaHoardArtfs.jpg|Artifacts of the hoard from Kumna, Estonia ==References==