The most common local names are, Didaroke Gwerrinjoke Maleoke Waddaroke Djekoke Kotejumeno Namyungo Yungaree.
"These family names are common over a great portion of the continent; for instance, on the Western coast, in a tract of country extending between four and five hundred miles in latitude, members of all these families are found.

In South Australia, I met a man who said that he belonged to one of them, and Captain Flinders mentions Yungaree, as the name of a native in the Gulf of Carpentaria.
"These family names are perpetuated, and spread through the country, by the operation of two remarkable laws:-- "1st.

That children of either sex, always take the family name of their mother.
"2nd.

That a man cannot marry a woman of his own family name." From this it appears that the natives of that part of the country have in addition to their other ordinary names a family or surname, which is perpetuated through successive generations on the mother's side.

This is not the case as far as my observations and inquiries have enabled me to ascertain among the numerous tribes frequenting the Murray river, and Mr.
Moorhouse assures me that he has been equally unable to detect any coincidence of the kind among the tribes frequenting the district of Adelaide.
The division, numbers, and names of the various tribes are also subjects of difficulty and uncertainty.