|Nickname||The Mayor of Parramatta|
|Born||27 November 1937|
|Height||Waverley, New South Wales|
|1963–1967||New South Wales||3||0||0||0||0|
|Source: RLP Yesterday's Hero|
Club and representative career
He began his career playing first grade rugby union with Randwick, and was the youngest player ever to be selected to play in a first grade union side. Switching to rugby league, he was a fullback with the Parramatta Eels in the 1960s. He played 136 games for the club. Thornett was the leading Australian rugby league fullback in the early '60s after Keith Barnes and before Les Johns and Graeme Langlands.
Ken played in all six Tests of the 1963 Kangaroo tour and in 10 minor tour games. He made a further six Test appearances and by the end of his representative career in 1964 had played three Tests each against Great Britain and New Zealand, five against France and one against South Africa.
Ken and both his brothers were all exemplary sportsmen. John Thornett was a Wallabies captain who played 37 rugby union Tests for Australia over a distinguished[peacock term] 13-year career from 1955. Dick Thornett represented Australia at water polo, rugby league and rugby union. Much of Dick and Ken's club football career was played together at Parramatta and they have the very rare distinction of having played three international rugby league Tests together on the 1963–64 Kangaroo Tour.
- Peter Cassidy (2008-02-23). "Controversy reigns as NRL releases top 100 players". Macquarie National News. Retrieved 2008-02-23.
- "Centenary of Rugby League - The Players". NRL & ARL. 2008-02-23. Retrieved 2008-02-23.