Cyrillic script consonants from the older Glagolitic alphabet for sounds not found in Greek. Tradition holds that Cyrillic and Glagolitic were formalized either by Saints Cyril and Methodius who brought Christianity to the southern Slavs, or by their disciples. Paul Cubberley posits that although Cyril may have codified and expanded Glagolitic, it was his students in the First Bulgarian Empire under Tsar Simeon the Great that developed Cyrillic from the Greek letters in the 890s as a more suitable script for church books. Later Cyrillic spread among other Slavic peoples, as well as among non-Slavic Vlachs. Cyrillic and Glagolitic were used for
Cyril, Oklahoma sold one-half of the allotment to Mr. and Mrs. Pierson on July 26, 1907. The Piersons sold the land to the Cyril Townsite and Development Company on September 10, 1907. Although there is some dispute, the Cyril Station appears to have been named circa 1902 after Bayard and Laura Lookingglasses' daughter when they granted the railroad permission to build a section house next to the railroad stop. Some believed that the town of Cyril was named after the Cyril Station of the St. Louis-San Francisco Railroad. However a diligent search of all sources including Frisco Railroad, found no supporting evidence.