[goctorsurger]

Well I could be wrong here but Thailand doesn't recognise Dual Nationality so I would imagine:

Your Great-Grandparents are Chinese
Your grandparents would have had a choice of being Thai or Chinese depending on where they lived.
Your parents are Thai or Chinese depending on what your grandparents classed themselves as (if your grandparents declared themselves to be Thai then your parents were also Thai)


You are American (not sure how old you are but I have heard that a child with Thai parents in the UK has to choose by the age of 16 or 18 whether they are going to be British or Thai and can't be both), I assume the USA works in a similar way... This isn't the way some countries work though, for example if my parents were British but I was born in Australia then I would be entitled to a British and an Australian passport and so would be both.


Or maybe I have just got confused but from an official standpoint I don't think you can have Dual Nationalities with one half being Thai