Henry III of Castile to the court of Timur, founder and ruler of the Timurid Empire. He described that in Timur's palace at Samarkand, "everywhere the floor was covered with carpets and reed mattings". Timurid period miniatures show carpets with geometrical designs, rows of octagons and stars, knot forms, and borders sometimes derived from kufic script. None of the carpets woven before 1500 AD have survived. The Safavid Period (1501–1732) In 1499, a new dynasty arose in Persia. Shah Ismail I, its founder, was related to Uzun Hassan. He is regarded as the first national sovereign of Persia since the Arab conquest, and established Shi'a Islam as the state religion of Persia. He and his successors, Shah Tahmasp I and Shah Abbas I became patrons of the Persian Safavid art. Court manufactories were probably established by Shah Tahmasp in Tabriz, but definitely by Shah Abbas when he moved his capital from Tabriz in northwestern to Isfahan in central Persia, in the wake of the Ottoman–Safavid War (1603–18). For the art of carpet weaving in Persia, this meant, as Edwards wrote: "that in a short time it rose from a cottage métier to the dignity of a fine art." The time of the Safavid dynasty marks one of the greatest periods in Persian art, which includes carpet weaving. Later Safavid period carpets still exist, which belong to the finest and most elaborate weavings known today. The phenomenon that the first carpets physically known to us show such accomplished designs leads to the assumption that the art and craft of carpet weaving must already have existed for some time before the magnificent Safavid court carpets could have been woven. As no early Safavid period carpets survived, research has focused on Timurid period book illuminations and miniature paintings. These paintings depict colourful carpets with repeating designs of equal-scale geometric patterns, arranged in checkerboard-like designs, with "kufic" border ornaments derived from Islamic calligraphy. The designs are so similar to period Anatolian carpets, especially to "Holbein carpets" that a common source of the design cannot be excluded: Timurid designs may have survived in both the Persian and Anatolian carpets from the early Safavid, and Ottoman period. The "design revolution" By the late fifteenth century, the design of the carpets depicted in miniatures changed considerably. Large-format medaillons appeared, ornaments began to show elaborate curvilinear designs. Large spirals and tendrils, floral ornaments, depictions of flowers and animals,