De Gruchy is a South African architect and designer associated with the design retailer "Craftsman's Market", Brisbane. He worked for the Qld Public Works department (after 1962), designed furniture for "Craftsman's Market" and developed interior design with his spouse, Joy de Gruchy. He later lectured in architecture for the University of Queensland and was a joint sponsor of the Darnell-de Gruchy Art Prize (1969).