Ancient Celts

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Mark Cartwright
published on 01 April 2021
Available in other languages: French, German, Portuguese, Spanish, Turkish
Celtic Parade Helmet (by Xuan Che, CC BY-NC-SA)
Celtic Parade Helmet
Xuan Che (CC BY-NC-SA)

The Ancient Celts were various tribal groups living in parts of western and central Europe in the Late Bronze Age and through the Iron Age (c. 700 BCE to c. 400 CE). Given the name Celts by ancient writers, these tribes and their culture migrated and so they established a presence in territories from Portugal to Turkey.

Although diverse tribes and never a single unified state, the ancient Celts were connected by the Celtic language and marked similarities in art, modes of warfare, religion, and burial practices. Although the Celtic culture was absorbed within the Roman Empire from the 1st century BCE, Celtic people continued to thrive in more remote parts of Europe like Ireland and northern Britain where Celtic languages are still spoken today.

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The ‘Celts’ - Definition & Problems

The term ‘Celts’ is commonly used to refer to peoples who lived in Iron Age Europe north of the Mediterranean region prior to the Roman conquest after ancient writers gave them that name. However, it is a problematic label. This is because these peoples were not part of a unified state but, rather, belonged to a multitude of tribes, many of which had no direct contact with each other. The term remains useful for its convenience but it does disguise the complex relations between different western and central European tribes, the overlapping of some cultural features in time and space, and the isolation and uniqueness of other such features. The European Iron Age was certainly a vibrant period of cultural interaction, trade relations, warfare, and migrations.

Iron replaced bronze as the metal of choice to make stronger & more durable tools & weapons.

Origins: Urnfield, Hallstatt & La Tène

Most scholars agree that the origins of Celtic culture can be traced back to three earlier, closely-related, and overlapping cultural groups. The first of these is the Late Bronze Age Urnfield culture present around the upper Danube from c. 1300 BCE. The name of this culture derives from the common practice of interring the cremated remains of the deceased in urns and burying them. These peoples remain obscure for lack of archaeological evidence. From the beginning of the 1st millennium BCE and over the next two or three centuries, ironworking technology spread across Europe. As a consequence, iron replaced bronze as the metal of choice to make stronger and more durable tools and weapons.

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Map of Hallstatt & La Tène Cultures
Map of Hallstatt & La Tène Cultures
Dbachmann (GNU FDL)

The second proto-Celtic group was the Hallstatt culture, named after the site of that name in Upper Austria, which existed from c. 1200 to c. 450 BCE but was at its peak in the 8th to 6th century BCE. The Hallstatt culture spread to cover what is today western Austria, southern Germany, Switzerland, and eastern France on the one side, and eastern Austria, Bohemia, and parts of the Balkans on the other. It was the western side of this area that would eventually develop into what we might today call the ancient Celts. The Hallstatt culture likely spread via various means such as trade, tribal alliances, intermarriages, imitation, and migration. These peoples prospered thanks to local deposits of salt, iron, and copper; commodities which could be traded along waterways. That trade reached as far south as the Mediterranean cultures (the Etruscans in Italy and the Greek colonies in southern France) is evidenced by the presence of imported goods in Hallstatt burial mounds and precious goods such as gold and amber jewellery. The Hallstatt culture went into decline in the 5th century BCE, likely due to local resources running out, increased tribal competition, and the shift of trade routes elsewhere.

La Tène centres were particularly successful around major river points such as the Loire, Marne, Moselle & Elbe.

The third group significant in the formation of Celtic culture proper is the La Tène culture (c. 450 - c. 50 BCE), named after the site of that name on the northern shores of Lake Neuchâtel in Switzerland. Perhaps best identified as a group of diverse tribes unified by common features in art and religion, the La Tène culture was eventually present in a wide arc covering western and central Europe, spanning from Ireland to Romania. Cultural features include ironworking, making votive offerings in water sources, depositing weapons in tombs, and art which is stylised with swirling, geometrical, and vegetal designs. Once again, there is a multitude of evidence for trade with the Mediterranean states. La Tène centres were particularly successful around major river points such as the Loire, Marne, Moselle, and Elbe. The La Tène culture does not exactly correspond to the Celtic peoples since it existed in non-Celtic areas, for example in Germanic-speaking Denmark. Nevertheless, the term La Tène, one originally coined by archaeologists to classify artefacts, is still commonly (if imprecisely) used as a synonym for Celtic culture in Europe during the second half of the first millennium BCE.

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Celtic Language

One of the striking points of connection between many of the peoples of Iron Age Europe is their common language: Celtic. The Celtic language is a branch of the Indo-European language family. Scholars have divided Celtic languages into two groups: Insular Celtic and Continental Celtic. The latter group was no longer widely spoken after the Roman imperial period, and, unfortunately, the only surviving examples of it are mentions in the works of Greek and Roman writers and some short epigraphic remains such as pottery graffiti and votive and funerary stelae. The best documented of this group is Gaulish.

Celtic Burial Mound Reconstruction, Hallstatt
Celtic Burial Mound Reconstruction, Hallstatt
Wolfgang Sauber (CC BY-SA)

The Insular Celtic group of languages are two: British or Brittonic (Breton, Cornish, and Welsh) and Goidelic (Irish and its medieval derivatives, Scots Gaelic, and Manx). Brittonic was spoken in all of Britain in the Roman period. From it evolved Cumbrian (extinct since medieval times), Cornish (no longer spoken after the 18th century CE but recently revived), Breton (likely introduced by 5th-century CE British settlers and not connected directly to Gaulish), and Welsh, which is still spoken today. The earliest evidence of Goidelic-Irish dates to the 5th century CE, and it later evolved into Middle Irish (c. 950-1200 CE) and, thereafter, morphed again into Modern Irish, which is still spoken today.

Celtic Religion

The second common characteristic of those people we call ancient Celts is their religion. This was a polytheistic religion with a multitude of gods, although our knowledge of them is limited to classical authors given the lack of written works by the Celts themselves. Variations existed across regions and the centuries, but common features of the ancient Celtic religion include:

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  • the reverence for sacred groves and other natural sites like rivers and springs.
  • the dedication of votive offerings to gods such as foodstuffs, weapons, animal and (more rarely) human sacrifice.
  • the depositing of valuable and everyday goods with the deceased in tombs, indicating a belief in an afterlife.
  • a belief in the protective power of totems, particularly animals like the stag and boar.
  • a reverence for the human head, which was considered the location of the soul.
  • the use of taboos to ensure compliance with religious and community rules.
  • ceremonies led by druids.

With druids loath to commit their knowledge to writing, there are no surviving sacred texts, hymns, or prayers for the Celtic religion. Key gods were given all-embracing powers or characteristics, and these include Cernunnos, 'the horned god' who likely represented nature and fertility. Another major figure is Lugus (known as Lugh in later periods), perhaps the only universally worshipped god in the Celtic world, who represented the sun and who was regarded as all-wise and all-seeing. There were many female goddesses associated with healing springs and rivers such as Sequana, a personification of the River Seine, and Epona, who was linked with horses.

Celtic God, Gundestrup Cauldron
Celtic God, Gundestrup Cauldron
Unknown Artist (Public Domain)

An unusual feature of Celtic gods was that some were viewed as a trio, perhaps representing three different aspects of the same divinity. One trinity example is the three mother goddesses, the Matronae who represent individually the similar concepts of strength, power, and fertility. Of the numerous local and regional gods, many were associated with those things of primary concern to everyday life such as warfare, sovereignty, tribal identity, healing, hunting, and the protection of specific groups like mothers and children. There was a Greek and Roman influence on the Celtic religion from the 2nd century BCE when Celtic sacred sites, which had previously been mere clearings surrounded by earthworks, began to use larger stone temples. So, too, some Greco-Roman gods were incorporated into the Celtic pantheon.

Celtic Society

Once again, without first-hand written records it is difficult to reconstruct the intricacies of ancient Celtic society. Nevertheless, we do know that society in many Celtic tribes was hierarchical. At the top were rulers and elite warriors, then there were the religious leaders and repositories of the community's collected knowledge, the druids, who were exempt from taxes and military service. Then there were specialised craftworkers, traders, slaves, and farmers - the largest group by far in societies that were rural and agrarian.

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Celtic societies were led first by monarchs and then by elected chiefs or, alternatively, a small council of elders. Over time, many tribes joined together for mutual assistance or became dependent on another, more powerful one and so paid some kind of tribute. By the end of the period, there were large confederations of tribes, joined to meet the common threat from the Romans. We know that some women were chiefs in Celtic Britain, for example, Cartimandua, ruler of the Brigantes tribe in the north of England in the mid-1st century CE, and Boudicca (d. 61 CE), queen of the Iceni tribe, who led a revolt of several tribes against the Roman occupation in 60 CE. There is also evidence that some women were treated as equally as men in terms of burial with precious goods, for example, in the 6th-5th century BCE Vix burial near Châtillon-sur-Seine in northeast France.

Waterloo Helmet
Waterloo Helmet
British Museum (Copyright)

There was a strong kinship system where rulers and their extended family dominated the society through their ownership of land and revenue from trade. Rulers maintained the loyalty of their followers through gift-giving, organising Celtic feasts, and social display. Ties were reinforced between families by fostering children with other aristocratic families, a method also used to bind different tribes together in alliances. There was also a system where the elite undertook the welfare and protection of those who gave some sort of service in return, much like feudalism in the Middle Ages.

Except for slaves, there is no evidence of any barriers for the child of one of the social groups to eventually enter another group provided they acquired the necessary wealth (through valour in war, for example) or went through the required education or apprenticeship, which for a druid lasted some 20 years. Julius Caesar (c. 100-44 BCE) noted in his Gallic Wars that Celtic women in Gaul brought to their husbands a dowry and that this could be inherited by the woman if her partner died before her. Caesar also noted that husbands had the power of life and death over their wives and their children. Whether these assessments are accurate and whether they applied to Celts elsewhere is much debated by scholars.

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Celtic Art

Alongside language and religious practices, another common feature of Celts throughout Europe is the art they produced. Celtic art was influenced by that of the earlier indigenous Iron Age cultures mentioned above and by neighbouring cultures or trading partners like the Thracians, Scythians, Greeks, Etruscans, and Romans, and through these peoples, ideas from the Near East. Materials used include pottery, stone, iron, bronze, and gold with extra decoration achieved using imported exotic materials like glass, coral, and amber. Metals were cast, engraved, punched, traced, inlaid, and worked on using repoussé (grooving the material from behind to create a relief on the other side). Typical art objects include ornate cauldrons, sandstone or wooden human figures, Celtic bronze shields, gold torcs, penannular brooches (composed of a pin and ring), and animal figurines to be used as votive offerings.

Celtic Heads Sculpture, Entremont
Celtic Heads Sculpture, Entremont
Michel Wal (CC BY-SA)

Prominent features of Celtic art include:

  • a love of flowing forms.
  • depictions of gods and warriors, particularly the heads of these.
  • depictions of animals (real or imagined), especially stags, boars, horses, and hunting dogs.
  • a love of complex vegetal designs, abstract patterns, and swirling interlocking lines.
  • a desire to beautify even functional everyday items.
  • a desire to convey messages of power and religious ideas.

Trade in the Celtic World

As noted above, the proto-Celtic cultures in western and central Europe had already established trade links with the Mediterranean cultures, and this continued with the Celts. Tin from Britain, amber from the Baltic, and horses from eastern Europe and the Balkans were also imported and used or passed on southwards. Celtic resources which were traded included salt, slaves, iron, gold, wool cloth, and furs. These goods were exchanged for wine (in huge quantities), silver, luxury manufactured goods (like bronze flagons, fine Greek pottery, and Etruscan bronze kraters), silk, and the precious materials for use in art objects and jewellery mentioned in the previous section.

Trade had secondary consequences besides giving access to scarce resources. Ideas in art, religion, and technology were passed on. The Celts adopted flat grave burials and minted their own coins, for example. There was, too, an increase in the competition between Celtic tribes to acquire the resources needed for trade. The Celtic world was expanding its horizons and the creation of an ever-growing rich elite would have consequences for the wider continent as the Celts began to enviously eye the very heartlands of their rich trading partners and vice-versa.

Celtic Torc, Belstead Brook
Celtic Torc, Belstead Brook
The British Museum (CC BY-NC-SA)

Celtic Warfare

That warfare was a major part of Celtic culture is clear from the number of gods in the ancient Celtic pantheon associated with war and the great number of weapons deposited in tombs. Courage and prowess on the battlefield were also important in determining status within society. Celtic warriors in Gaul are described as bleaching their long hair using lime-water, while in Britain, they painted designs on their bodies. Several classical authors also comment on the strange fact that Celtic warriors could enter battle naked and that they collected the heads of their victims. Many Celtic warriors wore a torc necklace, and these were likely a symbol of status and rank within the community. There is evidence that Celtic women participated in warfare.

Celtic warriors used spears, long swords, and distinctive large rectangular or oval shields. Celtic armies employed slingers, chariots, and cavalry, while organization on the battlefield was achieved through the use of standards and war horns. Celtic armies did cause quite a few problems for their neighbours from the 4th century BCE onwards as tribes moved west, south, and eastwards in waves to find new wealth opportunities in what is sometimes called the Celtic Migration. Brennus, chief of the Gallic Senones tribe, famously sacked Rome in 390 BCE, and the Celts again caused havoc when they looted Delphi in 279 BCE as they passed through Greece on their way to Asia where they became known as the Galatians. The Celtic collection of tribes attacked the Romans again in 225 BCE and were frequent mercenary allies of Carthage during the Punic Wars (264-146 BCE). In the longer term, though, Celtic armies were no match for more disciplined and better-equipped enemies like the Hellenistic kingdoms and the Romans in large-scale battles. However, once conquered, Celtic warriors, who had always been recognised for their bravery, did subsequently fight successfully as mercenaries in many Greek and Roman armies.

Battle Between Romans & Celts at Cadbury Castle
Battle Between Romans & Celts at Cadbury Castle
Ancient Warfare Magazine/ Karwansaray Publishers (Copyright)

Decline & Legacy

The first real sign of trouble in the Celtic world was a marked increase in local competition for resources and trade opportunities, and this manifested itself in the building of oppida in the 2nd and 1st century BCE. An oppidum was the Roman name for larger settlements which we now apply specifically to fortified sites, usually located on high points in the landscape or on plains at naturally defensible points like river bends. The fortifications usually consisted of an earthworks circuit wall, sometimes with outer ditches. Oppida were used as a point of refuge in war and otherwise as a safe place to concentrate manufacturing workshops and store the community’s resources.

This hostile environment deteriorated further when the Romans became intent on revenge for the havoc caused by the migrating Celtic tribes in the two previous centuries and, lured by the promise of gold and other resources, total conquest. In 125 BCE the Romans attacked the Arverni tribe in Gaul and, less than a century later, Julius Caesar attacked and conquered Gaul, despite stiff resistance from such tribal leaders as Vercingetorix (82-46 BCE). The Roman Empire kept on expanding, direct attacks were made on such important community figures as the druids, and so the continental Celts and those in southern Britain were eventually assimilated into Roman culture. The Celts did continue to thrive in more isolated places like Ireland and northern Britain. It is from these areas that Celtic culture would continue into the medieval period and express itself most visibly in the epic poems of Irish, Welsh, and Scottish medieval literature and in art, now Christianized. The old Celtic traditions lived on in these epic poems and in the form of complex curvilinear designs within illuminated manuscripts, in the ubiquitous penannular brooches, and in the sophisticated vegetal motifs on imposing stone crosses in churchyards.

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About the Author

Mark Cartwright
Mark is a full-time writer, researcher, historian, and editor. Special interests include art, architecture, and discovering the ideas that all civilizations share. He holds an MA in Political Philosophy and is the WHE Publishing Director.


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APA Style

Cartwright, M. (2021, April 01). Ancient Celts. World History Encyclopedia. Retrieved from

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Cartwright, Mark. "Ancient Celts." World History Encyclopedia. Last modified April 01, 2021.

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Cartwright, Mark. "Ancient Celts." World History Encyclopedia. World History Encyclopedia, 01 Apr 2021. Web. 22 Jul 2024.