This time the census gave a total of 72,956 Maori, but the impact of lost ancestries was even greater.
In 2003 the Australian Bureau of Statistics attempted to calculate the scale of the lost ancestries by sampling some 367,000 census forms.
This perhaps raises the question as to whether all those who had named at least two other ancestries as well as Maori would have regarded themselves as being of Maori ethnicity, or whether the 40,303 who gave sole Maori ancestry would have been the most likely to have identified as such.
Doubtless as a response to the problem of lost ancestries, in 2006 the question and guide introduced an instruction to respondents to enter two ancestries only.
The majority of persons of the first generation of most Western European ancestries (except the English) have partners of a different ancestry.
By the third generation, two-thirds of men and women of these ancestries have partnered outside their ethnic group.
Men and women of Western European ancestries have similar rates of intermarriage.
myDNAmix is an admixture test that determines various ancestries
included in one's genetic make-up.
A census guide handed out with the census form suggested that people should answer the question with the ancestry or ancestries that they most closely identified with, and that they could count their ancestry as far back as their great grandparents.
Most were families where both partners reported Australian ancestry or the same Anglo-Celtic or European ancestry as their sole ancestry or the first one coded of their multiple ancestries.
In most of these couples, the spouses were of different European ancestries or one spouse was of Australian ancestry and the other was of European ancestry.
It is of the highest professional honor that we've contributed to history by tracing the ancestries
of these iconic families.