painter and printmaker, was born on 27 March 1901 in Perth. Her father, Hubert Trethowan, was Under Secretary for the WA Colonial Secretary’s Department and Controller of Prisons. She studied art under Henri Van Raalte in Malcolm Street, Perth (c.1915-20) then at Perth Technical College (c.1925-27). In 1925 she exhibited a watercolour with the W.A. Society of Arts and in 1931 she showed nine woodcuts in a joint exhibition with J.A.B. Linton and Beatrice Darbyshire at Orient House, Perth. In 1933 and in 1935 she exhibited woodcuts with the Perth Society of Artists; she showed three drawings with them in 1936.
Trethowan, who never married, died in Perth on 4 February 1939. In 1978 a donation to the Art Gallery of Western Australia from Beatrice Darbyshire of four of Trethowan’s woodcuts revived interest in her work. A further donation of a complete set of her engravings from her sister-in-law Edna Trethowan and five of her original woodblocks containing eleven images from J.A.B. Linton led to an exhibition of her blocks and engravings in 1980 and to recognition of her contribution to the art of printmaking in Western Australia.
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