Portrait of Cornelis de Koninck (c. 1600–1658)

Pieter van der Werff's Portrait of Cornelis de Koninck, now in Museum Rotterdam, is a companion piece to his Portret van Johan Abrahamsz. De Reus, forming part of a group of Rotterdam burgher portraits that document the city's prosperous merchant and civic class in the early eighteenth century. De Koninck was a Rotterdam citizen whose portrait by Van der Werff preserves his identity and self-presentation for posterity — the fundamental social function of bourgeois portraiture in the Dutch tradition. Rotterdam in the early eighteenth century was a thriving commercial city benefiting from the global trade networks of the Dutch East and West India Companies, and its civic culture produced a portrait patronage class with well-defined ideas about how they wished to be remembered. Van der Werff's refined late-Dutch style was well suited to the aspirational self-presentation of this prosperous bourgeoisie.

Van der Werff employs the smooth, polished portrait technique of the late Dutch Golden Age tradition, with a refined surface that reflects both the influence of French court portraiture and the Dutch fijnschilder tradition of meticulous finish. The sitter's features are rendered with careful individuality, and his costume — typical of early eighteenth-century Dutch burgher dress — is depicted with precise textile observation.