Professor Giovanni Costa (1826–1903)

Professor Giovanni Costa (1826–1903), painted in oil on canvas in 1878 and held at Leighton House, depicts one of Leighton's closest artistic friendships — the Italian painter Giovanni Costa, who had a formative influence on Leighton's approach to landscape painting and was a central figure in the loose group of artists known as 'The Etruscan School' or 'The Aesthetes', who shared a commitment to ideal beauty and the integration of figure and landscape. Costa settled primarily in Italy but maintained strong connections with British painters, and his friendship with Leighton, G.F. Watts, and others was artistically significant. The portrait was made during the period of their greatest closeness and represents a tribute to an intellectual and artistic friendship that shaped Leighton's approach to landscape composition.

Portraits of close artistic friends typically allow the painter greater freedom of interpretation than formal commissioned likenesses. Leighton's rendering of Costa can be expected to capture the intelligence and sensitivity of a painter he deeply respected, with compositional choices that reflect their shared aesthetic values. The handling is likely to be among Leighton's most confident in portraiture, rendered without the constraints of social formality.