Date of Birth: 
About Arthur Trethowan
- Sir Arthur King Trethowan KCMG (14 September 1863 – 26 November 1937) was an Australian politician. Born in Creswick, Victoria, to auctioneer Samuel Trethowan and Charlotte King, he attended Creswick Grammar School before becoming an auctioneer at Numurkah.
- On 9 November 1886 he married Jane Alice Manifold, with whom he had eleven children.
- Around 1898 he bought land at Berrigan, later expanding his interests to include property at Oaklands, Dubbo and the Upper Hunter.
- In 1907 he was elected to Urana Shire Council, where he served until 1915; he was president in 1908, 1912 and 1915.
- An active member of the Farmers and Settlers Association, he was a councillor from 1909 to 1911, vice-president from 1911 to 1916, president from 1916 to 1920, vice-president again from 1920 to 1930 and treasurer from 1930 to 1937; he was also active in the Progressive and Country parties.
- In 1916 he was appointed to the New South Wales Legislative Council, where he served until his death at Dubbo in 1937.
- He was appointed Knight Commander of the Order of St Michael and St George in 1936.
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