Definition: Ancestry-based settlers
Migration statistics - UNO
Foreigners admitted by a country other than their own because of their historical, ethnic or other ties with that country, who, by virtue of those ties, are immediately granted the right of long-term residence in that country or who, having the right to citizenship in that country, become citizens within a short period after admission.
United Nations, "Recommendations on Statistics of International Migration", Revision 1, Statistical Papers, Series M, No. 58, United Nations, New York, 1998