Although born in New South Wales, he settled in Western Australia in 1915 and in the 1920s was one of Perth's best known businessmen as City Sales manager for T M Burke Pty.

[4] Treloar was a semi finalists at the Australasian Championships singles at Perth in 1921 (losing to Rice Gemmell).

[7] In 1933, Treloar became a professional tennis coach and was in high demand for his services.

Treloar was a fine golfer, played bowls and was also President of the West Australian Darts Association.

This biographical article relating to Australian tennis is a stub.