About Mark Williams (Australian footballer, born 1958)
Mark Melville Williams is a former Australian rules football player and coach. As a player, Williams represented West Adelaide and Port Adelaide in the South Australian National Football League (SANFL), as well as Collingwood and Brisbane Bears in the Australian Football League (AFL), from the 1970s to the 1990s. In his two stints at Port Adelaide, Williams played 115 games, kicking 104 goals, and won four premierships. One of several successful father-son combinations in Australian rules football, Williams became a successful coach after finishing his playing career, leading Port Adelaide to their first AFL premiership in 2004. In 1997, Williams joined Port Adelaide as an assistant coach in its inaugural season in the AFL, and in 1999, won the head coaching role as senior coach of Port Adelaide, replacing John Cahill. Port Adelaide, under Williams in his first year as senior coach in the 1999 season, finished seventh on the ladder and making the finals, but were eliminated by the eventual premiers Kangaroos.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.