The earliest evidence of human occupation in Hertfordshire come from a gravel pit in
Rickmansworth. The finds (of flint tools) date back 350,000 years, long before Britain became an island. constructed at the end of the
Iron Age People have probably lived in the land now called Hertfordshire for about 12,000 years, since the
Mesolithic period in
Ware (making Ware one of the oldest continuously occupied sites in
Europe). Settlement continued through the
Neolithic period, with evidence of occupation sites, enclosures, long
barrows and even an unusual dog cemetery in the region. Although occupied, the area had a relatively low population in the Neolithic and early Bronze Age, perhaps because of its heavy, relatively poorly drained soil. Nevertheless, just south of present-day Ware and Hertford there is some evidence of an increase in the population, with typical round huts and farming activity having been found at a site called Foxholes Farm. There is no evidence of settlement at Hertford itself from this period, although Ware and perhaps Hertford seem to have been occupied during Roman times. In the
Iron Age, a
Celtic tribe called the
Catuvellauni occupied Hertfordshire. Their main settlement (or
oppidum) was
Verlamion on the
River Ver (near present-day
St Albans). Other
oppida in Hertfordshire include sites at
Cow Roast near Tring, Wheathampstead, Welwyn, Braughing, and Baldock. Hertfordshire contains several Iron Age
hill forts, including the largest example in Eastern England at Ravensburgh Castle in
Hexton. There is a wealth of Iron Age burial sites in Hertfordshire, making it a place of international importance in Iron Age study.
The Roman Invasion of Britain In 55 BCE when the Romans first attempted to invade Britain, the
Catuvellauni (which is
Brythonic for "Expert Warrior") were the largest
British tribe. Caesar's report to the Senate said that "Cassivellaun" (
Cassivellaunus) was leader of the Britons, and Cassivellaunus' headquarters were near
Wheathampstead in Hertfordshire. On Caesar's second invasion attempt in 54 BCE, Cassivellaunus led the British defensive forces. The Romans besieged him at Wheathampstead, and partly because of the defection of the
Trinovantes (whose King Cassivellaunus had had murdered), the Catuvellauni were forced to surrender. However, after the siege of Wheathampstead, Caesar returned to Rome without leaving a garrison.
Cunobelinus became king of the Catuvellauni in 9 or 10
CE and ruled for about thirty years, conquering such a large area of Britain that the Roman writer
Suetonius called him
Britannorum Rex ( "King of Britain"). which may be related to another Iron Age defensive earthwork, the
Devil's Dyke, at Cassivellaunus' headquarters in nearby
Wheathampstead. The Romans defeated the Catuvellauni again in July 43 CE and this time, garrisoned Britain. When the Romans took over, their settlement, laid out in 49 CE, became known as
Verulamium.
Alban, a Roman army officer who became Britain's first Christian martyr after his arrest at
Chantry Island, died in the 3rd or 4th century and gave his name to the modern town of
St Albans. Verulamium became one of Roman Britain's major cities, the third-largest and the only to be granted self-governing status. Strong though Verulamium's defences may have been, they were not enough to stop
Boudica, who burned the city in 61 CE. Verulamium was rebuilt, with defences enclosing a site of some and was occupied into the 5th century.
Hertfordshire in the Early Middle Ages After the
Anglo-Saxon invasion of Britain, the Hertfordshire area formed parts of the
Kingdom of Mercia and the
Kingdom of Essex. The main early Saxon tribes there seem to have been the
Hicce,
Brahhingas and
Wæclingas. Place names tend to derive from Celtic rather than Saxon, and there is a "singular lack of Early Saxon place names." The
Synod of Hertford, which was the first national Synod of the English Church, took place on 26 September 672–3. It was at this Synod that the "question of Easter" was settled, and the church agreed how to
calculate the date of Easter. The Synod also marked the end of the conflict between the Celtic Church and the Romanised church introduced by
Saint Augustine. King
Offa of Mercia (died 796) built a church at
Hitchin in Hertfordshire, but it burned down in 910 CE and the monks moved to St Albans. Offa defeated
Beornred of Mercia at
Pirton, near Hitchin and gave his name to the village of Offley ("Offa's Lea"). Some sources (including
Matthew Paris, who was a monk at St Albans) suggest he died at Offley, One of Offa's last acts was to found St Albans Abbey.
Origins of the county The word Hertfordshire (Saxon "Heorotfordscir" or "Heorotfordscír") is attested from 866. The first reference (as "Heoroford") in the
Anglo-Saxon Chronicle is for 1011, but the county's true origins lie in the 10th century, when
Edward the Elder established two
burhs in
Hertford in 912 and 913 respectively. Hertfordshire did not exist in any practical sense in the late 9th century. In the war between
Saxon and
Norseman, Hertfordshire was on the front line. When, after the Saxon victory in the
Battle of Ethandun in 878, the Saxon King
Alfred the Great and Norse King
Guthrum the Old agreed to partition England between them, the dividing line between their territories split what was to become Hertfordshire almost through the middle, along the line of the
River Lea presumably between 973 and 975 CE. ==Early Middle Ages==