coincided with a period of renewed prosperity in the city with the signing of the Treaty of Antwerp in April 1609, which initiated the Twelve Years' Truce. In September 1609 Rubens was appointed as court painter by Albert VII, Archduke of Austria, and Infanta Isabella Clara Eugenia of Spain, sovereigns of the Low Countries. He received special permission to base his studio in Antwerp instead of at their court in Brussels, and to also work for other clients. He remained close to the Archduchess Isabella until her death in 1633, and was called upon not only as a painter but also as an ambassador and diplomat. Rubens further cemented his ties to the city when, on 3 October 1609, he married Isabella Brant, the daughter of a leading Antwerp citizen and humanist, Jan Brant. In 1610 Rubens moved into a new house and studio that he designed. Now the Rubenshuis Museum, the Italian-influenced villa in the centre of Antwerp accommodated his workshop, where he and his apprentices made most of the paintings, and his personal art collection and library, both among the most extensive in Antwerp. During this time he built up a studio with numerous students and assistants. His most famous pupil was the young Anthony van Dyck, who soon became the leading Flemish portraitist and collaborated frequently with Rubens. He also often collaborated with the many specialists active in the city, including the animal painter Frans Snyders, who contributed the eagle to Prometheus Bound (c. 1611–12, completed by 1618), and his good friend the flower-painter Jan Brueghel the Elder. Another house was built by Rubens to the north of Antwerp in the polder village of Doel, "Hooghuis" (1613/1643), perhaps as an investment. The "High House" was built next to the village church. Altarpieces such as The Raising of the Cross (1610) and The Descent from the Cross (1611–1614) for the Cathedral of Our Lady were particularly important in establishing Rubens as Flanders' leading painter shortly after his return. The Raising of the Cross, for example, demonstrates the artist's synthesis of Tintoretto's Crucifixion for the Scuola Grande di San Rocco in Venice, Michelangelo's dynamic figures, and Rubens's own personal style. This painting has been held as a prime example of Baroque religious art. Rubens used the production of prints and book title-pages, especially for his friend Balthasar Moretus, the owner of the large Plantin-Moretus publishing house, to extend his