El marques de Leganes on horseback

El Marqués de Leganés on Horseback, associated with a date of 1602 but more likely painted around the 1630s when Diego Mexía de Guzmán, Marqués de Leganés, was active as a military commander and art collector in the Spanish Netherlands, represents the equestrian portrait tradition at its most politically explicit. Leganés served as a commander under the Cardinal Infante Fernando and was one of the most important art collectors in Habsburg service, assembling a collection of over 1,300 paintings. A date of 1602 for this portrait is impossible given Leganés's birth around 1588 and active career in the 1620s-1640s. The equestrian format — horse and rider moving through a landscape, military authority radiating from posture and bearing — was the premier vehicle for aristocratic self-representation in Baroque court culture. The Musées Nationaux Récupération provenance indicates displacement during World War II.

Oil on canvas. The equestrian portrait format requires management of the horse's large form against a landscape background. De Crayer follows Rubens's conventions: three-quarter view, horse in active motion, rider commanding the upper compositional zone. The armour, baton of command, and landscape with military context identify the sitter's role and authority. The horse's musculature and movement are key to the image's dynamism.