Kingsley married his beloved wife, Nadia. However, the Gws new coach is making progress in the present day. The coach is originally from Eastern Ranges. At a young age, he used to play for the professional Australian rules football club Bombers reverse team.

Previously, Kingsley was appointed by Port Adelaide. In 1997, he made an impression in the professional Australian rules football club Port Adelaide Football Club. People acknowledged players as consistent defenders or midfielders of the team. He faced challenges in 2003 and reached the position, including being delisted from the game.

In 2004, Kingsley improved his game and made a spot being a premiership player that year. Also, in 2006, he played only five games. In his game, he injured one of the pairs of cruciate ligaments in his knee. 

As a result, Kingsley retired from the position. However, the player wants to continue his playing career. Perhaps, in the interview with The Age, the player mentioned before the injury about his game on September 12, 2006. 

Likewise, Natasha Sen is the spouse of former professional basketball assistant coach David Fizdale. 

Kingsley had three children from his spouse. Cayla, Ethan, and Raf Kingsley are the kids of the coach. Also, the assistant coach started his coaching career after retirement due to injury. In 2007, he had recruited at Port Adelaide as an assistant coach. In 2010, the coach ended the contract with the football club. 

After that, at the end of 2010, Kingsley joined the football club St Kida as an assistant coach. In 2019, the coach became part of the Australian rules football club Richmond as an assistant coach. 

On August 22, 2022, Kingsley was honored as the senior coach of the professional rules football team Greater Western Sydney Giants in Sydney Olympic Park. 

Greg McWilliams is married to his beautiful wife, Sarah McWilliams, blessed with twins, a son, Archie, and a daughter, Lanarose.

Kingsley may be raised by a supportive family who encouraged him to play from a young age. His parents may nature him throughout his life. Also, he was born in Eastern Rangers on August 20, 1975. The coach is currently 47 years old. Even he was drafted number 27 in the 1996 national draft. The coach appears to be 183 cm, and he weighs 83 kg. 

Kingsley was involved in media work. He won Australia's Brainiest Footballer in March 2006, a Network Ten quiz show special. After winning the game, he donated $20,000, which he received to the Little Heroes Foundation, run by former Adelaide footballers Anthony McGuinness and Chris McDermott. 

Richmond assistant coach Kingsley is the new senior coach of the GWS Giants from August 22 after the player has been training for the GWS role all his life.