One word, several meanings
“Moors” is a label that has been used for different people at different times, which is why the title of this article needs unpacking. There was no single “ancient civilization of the Moors”. The word comes from the Latin Mauri, the name Romans gave to the inhabitants of Mauretania, a region of northwest Africa corresponding roughly to northern Morocco and western Algeria. Centuries later, European writers extended the word “Moors” to Muslims of North Africa and the Iberian Peninsula, most famously those who ruled much of Spain in the Middle Ages. These are two different stories, separated by many centuries.
In short: the Mauri of Mauretania were an ancient, mostly Berber-speaking population known from classical sources, and the medieval Moors were people of varied origins, including Berbers and Arabs, who were part of the Islamic world. The terms overlap in etymology but not in identity.
The Mauri and Mauretania
Greek and Roman writers used names such as Maurousioi and Mauri for peoples living west of Numidia, in the lands facing the Atlantic and the western Mediterranean. Modern scholars generally think the Mauri were ancestors of later Berber-speaking (Amazigh) communities, but classical authors used the name loosely, and it did not necessarily describe a single tribe or political unit.
Phoenician traders had set up coastal posts in the region, as part of wider Phoenician colonization, and the area was in contact with the Carthaginian world. By the second century BCE there was a kingdom of Mauretania, ruled by local kings. Rome’s growing involvement in the western Mediterranean after the Punic Wars drew these kings into its politics.
Kings and clients
One well-known episode concerns King Bocchus I, whose daughter was married to Jugurtha, the king of neighbouring Numidia. When Rome fought Jugurtha, Bocchus handed him over to the Roman commander Sulla around 105 BCE, according to Roman historians such as Sallust. Roman writers present this as a shrewd political choice, though we know the story mainly from the Roman side.
In the late first century BCE, Augustus placed Juba II, a learned man who had grown up in Rome, on the Mauretanian throne in about 25 BCE. Juba II married Cleopatra Selene, the daughter of Cleopatra VII and Mark Antony, linking the region to the Ptolemaic dynasty of Egypt. Juba wrote works on history, geography and other subjects in Greek, although they survive only in fragments. Their capital at Iol, renamed Caesarea (modern Cherchell in Algeria), became a prosperous city.
Their son Ptolemy was killed on the orders of the emperor Caligula in 40 CE. Afterwards Mauretania was annexed and, under Claudius, divided into two Roman provinces, Mauretania Tingitana in the west and Mauretania Caesariensis in the east. Volubilis, in what is now Morocco, was a significant Roman town in the western province, known today for its excavated houses and mosaics. The Timgad grid plan, from the neighbouring province of Numidia, gives a sense of how Roman town planning changed the landscape of the wider region.
Mauri in the Roman world
Mauri horsemen had a reputation as skilled light cavalry, riding with little tack. Units of Mauri served as auxiliaries alongside the Roman legions, and they were deployed in several provinces of the empire. Roman writers could be dismissive or stereotyped when describing them, so their accounts have to be read with care.
Local resistance did occur. Rome faced revolts and raiding by groups in the mountains and edges of the provinces over the following centuries. In late antiquity, as imperial control weakened, Berber-led kingdoms emerged in parts of the region. After the fall of Rome in the west, the Vandals took control of North African coastal provinces in the fifth century, and the Eastern Roman Empire reconquered some of them in the sixth century. Local leaders such as Masuna, known from an inscription, ruled Mauri communities that were not directly under either power.
From Mauri to Moors
The shift in meaning came later. In 711 CE, an army including many Berbers, under the commander Tariq ibn Ziyad, crossed into Iberia as part of the Umayyad expansion. From then on, much of the peninsula, known as al-Andalus, was governed by Muslim rulers for varying periods until Granada fell in 1492. Medieval Latin and Spanish writers called these Muslims “Moors” (Spanish moros), after the old name for the western North Africans from whom many of the invaders had come. The word then became a general label for Muslims, covering people of Berber, Arab, Iberian and other ancestry, and was applied further afield.
It is therefore misleading to speak of “the Moors” as one ethnic group, or to treat the Roman Mauri as the direct cultural predecessors of medieval al-Andalus. Berber identities, Islamic law and Arabic culture all shaped the Andalusi world, and many people there were local converts. In some places in the Americas, Africa and Southeast Asia, the word was applied again by Europeans to unrelated Muslim communities. Today, the term is often avoided by historians in favour of more precise terms such as Berbers, Andalusis or Almoravids, depending on the period.
Why the distinction matters
When you read about the ancient Mauri, you are reading about the people of a Roman-era frontier region in northwest Africa, known largely through Greek and Latin texts and Roman-period archaeology. When you read about the medieval Moors, you are reading about a Muslim polity in Iberia and North Africa. Keeping the two apart makes it easier to follow the evidence for each, and to see how a name can travel through time and acquire new meanings.