In 1897, R.H Mathews goes by buggy with his two younger sons to the Hawkesbury river Aboriginal camp to see Charlie Clark. He sits down with members of “the Darkinung tribe” and identifies their language as “Darkinoong” and “Darkinyung”. Mathews finally settles on the spelling “Darkinung” for publication. Mathews writes that all the cultural information he obtains is: “by personal inquiries among the few old natives who still speak their own dialect” and “every word has been written down by myself in the camps of the [A]borigines, and much time and care has been bestowed upon the work”(Ford 215, 239).