Portrait of Aleksander Stankiewicz.

Portrait of Aleksander Stankiewicz, dated 1890 and now in the National Museum in Warsaw, was produced at the height of Siemiradzki's international career. Aleksander Stankiewicz was a Polish public figure, and the commission for his portrait indicates the social network of Polish cultural and civic life that Siemiradzki maintained despite his permanent residence in Rome. Portrait commissions from the Polish community — aristocrats, professionals, cultural figures — formed a steady thread through his career and kept him connected to his national identity. By 1890 Siemiradzki's portraits were distinguished by their combination of grand compositional assurance and psychological penetration — qualities honed through decades of figure painting in his historical canvases. The Warsaw museum's holding of the portrait places it within the national collection appropriate to a senior Polish public figure.

Oil on canvas in the half-length or three-quarter portrait format standard for professional and civic subjects. The academic technique achieves its main effect through the contrast between the carefully modelled face — the psychological centre of the portrait — and the more broadly handled clothing and background. Dark clothing typical of professional male dress in the 1890s is painted in differentiated blacks and dark blues that avoid the flatness of a simple silhouette.