Thai law requires that "the person that was born by the father or the mother is a Thai nationality. Whether born in or outside the Kingdom of Thai nationality by birth as a matter of course.
Thailand law requiring "A person born without father or mother is a national of Thailand. Whether born in or outside the Kingdom. Thailand would have citizenship by birth.
Thai law given. "The person who was born by the father or mother who is a Thai nationality. Whether in or outside the kingdom. Unavoidable nationality by birth.