 In 1986, Clague was the first Aboriginal person to become a trustee on the Australian Museum Trust.In November 1996, she and Della Walker lodged a native title claim, known as Yaegl #1, that encompasses a large stretch of the Clarence River and its tributaries, on behalf of the Yaegl people.This was successfully settled at a Federal Court of Australia consent determination hearing in 2015, ending what had been the oldest legal matter before the court.