Ken’s Irish Celtic Patterns. Before Christianity, the Celtic art form known as La Tène was carved into rock, etched in bronze and possibly tattooed by the Iron Age inhabitants of Ireland. Similar to British La Tène (pre-Roman Celtic art), but substantially different. The art of the Irish was less formalised and more vegetal (like growing plants). But contrary to what is usually understood about the art of the Irish and the British, I believe there is an underlying common structure between the ar