| Place Of Birth | Port Vila, Vanuatu |
| Residence | Sydney, New South Wales, Australia |
| Marital Status | Single |
| Occupation | Architect |
| Coach | Rudolph Sopko |
| Club | Asics West Track & Field Club Inc / NSWIS |
Commonwealth Games History | Manchester 2002 4th in the Javelin (77.31m) |
Olympic Games History | Athens 2004 21st in the qualifying round, Javelin (77.43m) |
| Other | When William first threw over 80 metres in 2003 he became the fourth Australian ever to do so.
He set a new personal best in 2004, throwing 85.60, a distance just 15cm short of the Australian record. |