Where do you come from

The Maori people define themselves by there iwi. Where they have come from. This is not where they live. I fell into this trap when I was asked where I came from, and I said West Auckland but the person wasnt asking me that. They were asking me what my heritage was. While I have a strong Irish ancestory from both sides of my parents, i do not identify myself with being Irish. I am a New Zealander and being a Pakeha New Zealander, I have a unique identity. How do you defien your uniqueness?