A Timeline of Events of the Celts
4000-3500 B.C.E. and earlier The future Celtic territories are first farmed, and megalithic monuments are built
2500-1500 B.C.E. Period during which most pre-Celtic megaliths were built
1800-1600 B.C.E. The Bronze Age
1000 B.C.E. The appearance of the proto-Celtic Urnfield Culture
900-500 B.C.E. The Halstatt period — emergence of the first true Celtic culture
600 B.C.E. Iron Age
500-15 B.C.E. The La Tène Period, exemplified by an explosion of art and culture. Also referred to as the Heroic Age.
450-450 B.C.E. Expansion of Celtic culture into Spain and Northern Italy
390 B.C.E. The Celtic invasion of Rome
279 B.C.E. Celts invade Greece
200 B.C.E. Gaulish occupy many parts of Western Europe, including the British Isles, France, Germany, Belgium, and Switzerland
100 B.C.E. Arrival of the Gaels in Ireland
82 B.C.E. Rome repels the Celts
70 B.C.E. First known appearance of the druids
55 B.C.E. The Romans under Julius Caesar invade Celtic Britain
52 B.C.E. Rome defeats the Celts in Gaul
43 B.C.E.-409 C.E. Roman control of Celtic territories in Britain and Wales
61 C.E. Rome destroys remaining druid communities at Anglesey
62 C.E. Queen Boudicca defeated and the Iceni rebellion ended
432 C.E. Arrival of St. Patrick brings Christianity to Ireland
445 C.E. Vortigern and Myrddn
465 C.E. Probable birth of the historical Arthur
563 C.E. Arrival of Columcille in Iona
2500-1500 B.C.E. Period during which most pre-Celtic megaliths were built
1800-1600 B.C.E. The Bronze Age
1000 B.C.E. The appearance of the proto-Celtic Urnfield Culture
900-500 B.C.E. The Halstatt period — emergence of the first true Celtic culture
600 B.C.E. Iron Age
500-15 B.C.E. The La Tène Period, exemplified by an explosion of art and culture. Also referred to as the Heroic Age.
450-450 B.C.E. Expansion of Celtic culture into Spain and Northern Italy
390 B.C.E. The Celtic invasion of Rome
279 B.C.E. Celts invade Greece
200 B.C.E. Gaulish occupy many parts of Western Europe, including the British Isles, France, Germany, Belgium, and Switzerland
100 B.C.E. Arrival of the Gaels in Ireland
82 B.C.E. Rome repels the Celts
70 B.C.E. First known appearance of the druids
55 B.C.E. The Romans under Julius Caesar invade Celtic Britain
52 B.C.E. Rome defeats the Celts in Gaul
43 B.C.E.-409 C.E. Roman control of Celtic territories in Britain and Wales
61 C.E. Rome destroys remaining druid communities at Anglesey
62 C.E. Queen Boudicca defeated and the Iceni rebellion ended
432 C.E. Arrival of St. Patrick brings Christianity to Ireland
445 C.E. Vortigern and Myrddn
465 C.E. Probable birth of the historical Arthur
563 C.E. Arrival of Columcille in Iona