Fos Williams nació el 21 de febrero de 1922 en Australia Meridional, Australia. Estuvo casado con Veronica Ganley. Murió el 1 de septiembre de 2001 en Australia Meridional, Australia.
Became a Member of the Order of Australia (AM) on 26 January 1981 (which was also his 25th wedding anniversary) for his services to the sport of Australian football.
