the rose window is unlikely during the Medieval period, because the term "rose window" was not coined until the 17th century, a time when few such windows were being constructed. However, with the revival of the Gothic style in the 19th and 20th centuries, much stained glass that was installed in rose windows, both in new churches and as restoration in old churches, was dedicated to the Virgin Mary. Timeline Note: The styles below refer to the architectural advancements that occurred in the evolution of the Rose window. Origin of the overall concept is thought to have come from Roman oculus Example(s): Pantheon, Rome (Built 113–125 A.D.) Roman mosaic were common for rose patterns. Early Christian (260–525 A.D.) Oculi style Often used in France and Italy at this time. Roughly only 6 feet in diameter. Some were elaborately decorated with carved ornament and symbols of the Evangelist. Also it was common for them to be decorated with images of lions, bulls, eagles, and angels. With that being said, most had little-to-no decoration. The most important identifying thing about the oculi style was that a technically, in the traditional sense, wasn't a window. This was due to the fact that, there was no glass separating the inside of the building from the outside. Sometimes they would have metal grate bars in them. The belief of the purpose and use, was to have natural light within the structures. Example(s): Chapel of Burj Heidar (298 A.D.) Church of the Holy Sepulchre (335 A.D.) Byzantine (330–1453 A.D.) Oculi style Example(s): Saint-Généroux (950 A.D.) Created later in the Byzantine period, it was heavily influenced by the Romanesque period that was just about to flourish. Other speculation of its origins, is that it comes from the six-lobed rosettes and octagon, that decorate Hisham's Palace (Built 740–750 A.D.) In 848, the earliest known example of an axially placed oculus with tracery became San Miguel de Lillo. During the 6th–8th century, semicircular windows were thought to have existed. In Spain, the Oviedo vicinity, has some of the earliest examples of rose windows outside of the Byzantine Empire. (9th – early 10th century) Romanesque (1000–1150 A.D.) Oculi style Example(s): Cefalù Cathedral (12th century A.D.) Small circular windows were common, and very popular of this period. The reason for this, was the poor architectural advancements at the time. At this point, the heavy stone material that was favored could only