Horace Trenerry was born in South Australia, and spent all but a few months of his life in this State. Consequently, most of the instruction he received came from a succession of teachers in Adelaide. He did move to Sydney for a brief period in 1922, and attended the Julian Ashton School, where he met Elioth Gruner and other well-known artists of the time. On returning to Adelaide, Trenerry took up residence in the Adelaide Hills, where he formed a friendship with Hans Heysen (q.v.) who was to have an important influence on Trenerry's work.

Painting still-life studies and landscapes, Trenerry observed nature at close hand as he roved the Adelaide Hills, revelling in the spontaneity and freshness of ever-changing outdoor scenes.

Trenerry later resided in the Willunga area, a district which was also loved by Ursula and Edward Hayward in the post-war years. The Haywards became great supporters and friends of the artist, particularly in his later years when he was no longer able to paint and had to enter the Home for Incurables in Adelaide.

PICCADILLY VALLEY, c.1933, shows Trenerry's sensitive use of colour and the careful structuring of his works. He has captured the tranquil, clear atmosphere as the viewer's eye follows the road towards the drifting smoke. It is an accurate depiction of a particular view of a lovely valley, painted with sure brushstrokes, in the cool colours of the Adelaide Hills landscape.