Meaning and history
Cyril comes from the Greek name Κύριλλος (Kyrillos), which derives from κύριος (kyrios), meaning “lord,” a word often used in the Greek Bible for God or Jesus. The name was borne by several important saints, including Cyril of Jerusalem, a 4th-century bishop and Doctor of the Church; Cyril of Alexandria, a 5th-century theologian; and Cyril, a 9th-century Greek missionary to the Slavs who, with his brother Methodius, is credited with creating the Glagolitic alphabet to translate the Bible into Slavic. The Cyrillic alphabet, named after him, descends from Glagolitic. Cyril has been especially common in Eastern Europe and other regions where Orthodox Christianity is widespread, and it came into general use in England in the 19th century.
Cyril moved from #957 to #971 for boys between 1965 and 1966. Its highest annual birth count came in 1916, with 328 births.