The use of computers to gather and order genealogical material has not only allowed for a more efficient handling of large amounts of data; it has also given rise to new analytical approaches with potential applications. I would like to briefly explore one such approach, the representation and analysis of empirical marriage patterns, with a view to its possible relevance for Native Title. Ethnographic accounts overwhelmingly attest to the central mediating role played by affinal relationships among Australian Aboriginal populations. People having inter-related ties to the same stretch of territory, those undertaking ceremonial and/or political activities together and so on, do not just happen to intermarry. Rather, ongoing relations of matr...