William of Orange

The painting showcases Key's technical skill, particularly in the use of chiaroscuro, where light and shadow create depth. The gold thread on the subject's jacket stands out against the dark fabric, and the face is rendered realistically with subtle shading and detail.

Adriaen Thomasz. Key trained under and later succeeded Willem Key in Antwerp. His work, recognized for its technical proficiency and inventive approaches during his lifetime, later influenced notable artists such as Rubens.