Sydney's sub-districts rugby (now known as the New South Wales Suburban Rugby Union or Subbies) gained its first major trophy in 1923, when W. H. Kentwell, then president of Mosman Rugby, presented the Kentwell Cup.
In 1923, Sydney's suburban rugby league secured its first prominent trophy under the New South Wales Suburban Rugby Union or Subbies banner, thanks to a donation from W. H. Kentwell, who was president of Mosman Rugby at that time, and the award was named after him.