Portrait of mother and daughter.

Portrait of mother and daughter, painted in 1610 and held at the Museum of John Paul II Collection in Warsaw, documents de Vos's very early portraiture in a collection of particular historical interest. The Museum of John Paul II Collection was established in Warsaw to house artworks brought to Poland after World War II from previously dispersed European collections; its holdings reflect the complex movement of art across war and displacement in the twentieth century. The 1610 date makes this one of de Vos's earliest surviving portraits, painted when he had been a guild master for just two years. A mother-daughter portrait at this early date shows the full range of his early practice: he was already handling multi-figure portrait groups with confidence. The painting reflects the Flemish convention of representing mothers and daughters in the same tonal and compositional register, bound by shared dark costume and white collars, distinguished primarily by age and scale.

Panel support in 1610 was standard for intimate domestic portraits. The smooth ground allows careful rendering of the two faces — the worn, mature features of the mother contrasting with the younger, softer face of the daughter. Costume convention dresses both figures in similar dark attire, with lace collars providing the shared white accent that visually links them.