The Irish were originally a Bronze Age civilization that was transformed with the arrival of the Celts in 6th-5th Century B.C. Since then the Celtic Irish culture and ways continue to this day in recognizable form in many parts of Ireland. The Celts first arrived in the British Isles around 500 B.C. (in the form of the Brythonic tribes) and continued to arrive in waves after that. It is debated on whether it was an invasion or gradual cultural assimilation that brought about the Celtic Irish cul