About Jack Rayner
Rupert John Rayner was an Australian state and national representative rugby league player and NSWRFL coach. His club playing career was with the South Sydney Rabbitohs from 1946 to 1957 and he also represented New South Wales on eleven occasions and played in five Test matches for the Australian national side. As captain-coach for all of those wins Rayner was the first man to coach a side to five Grand Final victories, a record subsequently matched by Kearney and Jack Gibson and eventually beaten in 2006 by Wayne Bennett. Rayner trialed with Souths in 1946 and was graded straight to first grade. Rayner's fifth premiership win in 1955 stands as the record for the most number of grand final successes by an individual as captain (equaled by Ken Kearney's who also achieved five in 1960). Rayner was first called up to represent his state in 1947.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.