1902: An' supposen Ole King Billy an' his ole black gin comes round at holiday time and squats on the verander — Henry Lawson, A Bush Publican's Lament,.
Tasmanian aboriginal man William Lanne (c.1835-1869) believed to have been the last Tasmanian aboriginal man. (Reference: Bill Wannan, Australian Folklore, Lansdowne Press, 1970, reprint 1979 ISBN 0-7018-1309-1, entry for "King Billy", page 333.)
One of various other specific aboriginal men referred to as King Billy at times. (Reference: Wannan above.)