Many of the Aborigines captured are tried before the Supreme Court in Sydney and receive a variety of sentences. Threlkeld, assisted by Biraban, is present. Biraban interprets for the court and tries to explain the customs of the Aboriginal clans to the judges. Threlkeld is one of only three interpreters regularly used by the courts. He interprets for the entire “Sydney District”. (The Australian, 19 May 1835, in Blair, 2003, 33).