Saint Cyril and Saint Methodius
Saint Cyril and Saint Methodius were two Byzantine brothers born in Thessalonica, known for their pivotal roles in the spread of Christianity and the development of a written Slavic language in the 9th century. Cyril, originally named Constantine, was a highly esteemed scholar and linguist, while Methodius served as a provincial governor before turning to monastic life. Their mission began in 863 when they were invited to Great Moravia by King Rostislav to create a Slavic liturgy and establish an ecclesiastical hierarchy to reduce the influence of the Bavarian Franks.
To facilitate their work, Cyril developed the Glagolitic alphabet, the first written system for the Slavic language, which laid the groundwork for Old Church Slavonic and the later Cyrillic alphabet. Their efforts significantly impacted the cultural and spiritual landscape of the Slavic peoples, earning them the title "Apostles to the Slavs." After a successful mission, Cyril died in Rome in 869, while Methodius continued their work until his death in 884, solidifying the establishment of a distinct Slavic Christian tradition. Their endeavors not only enhanced the spread of Christianity but also fostered a sense of unity and cultural identity among the Slavic peoples, influencing regions as far as Bulgaria and Russia in later centuries.
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Saint Cyril and Saint Methodius
Macedonian religious leaders
- Saint Cyril
- Born: c. 827
- Birthplace: Thessalonica, Macedonia (now Salonika, Greece)
- Died: February 14, 0869
- Place of death: Rome (now in Italy)
- Saint Methodius
- Born: c. 825
- Birthplace: Thessalonica, Macedonia (now Salonika, Greece)
- Died: April 6, 0884
- Place of death: Probably near Velehrad, Great Moravia (now in the Czech Republic)
Through their spiritual commitment, Cyril and Methodius expanded Christianity in central and eastern Europe and established the foundations of Slavic culture and literature with the development of the Glagolitic alphabet.
Early Lives
The brothers Constantine (Cyril was a religious name taken just before his death) and Methodius (mih-THOH-dee-uhs) were born in the Macedonian city of Thessalonica, which was the second most important city of the Byzantine Empire and the provincial capital of the region to the west of Constantinople. Their father, Lev (Leo), was a high-ranking military officer in the province and a man of some importance; he was known at the imperial court in Constantinople. The younger of the two brothers, Constantine, was the more gifted intellectually and socially and certainly was better known. Methodius, by contrast, functioned in Constantine’s shadow until after the latter’s death in 869, despite his own considerable talents and intelligence. This lesser position is suggested by the facts that much more has been written about the early life of Constantine than has been about that of Methodius and that whenever their activities are discussed, Constantine is always cited first.

Following the death of his father in 841, Constantine was sent to Constantinople, where he became the protégé of Theoctistus, the legothete, or imperial chancellor, to the Byzantine empress Theodora. Impressed with Constantine’s intellectual and linguistic capabilities, Theoctistus arranged for him to study at the imperial court academy. There Constantine studied philosophy and theology under the tutelage of Photius, the most important Byzantine philosopher and theologian of his time and a future patriarch of Constantinople. By 849, Constantine had acquired not only a reputation as an outstanding scholar of philosophical and theological matters but also the exalted title of philosopher.
Cognizant of Constantine’s extraordinary skills, Theoctistus sought to use those talents for the empire by offering the scholar a place at the imperial court and marriage to his adopted daughter. Constantine, however, spurned these worldly opportunities and opted instead for a life of spiritual piety. Undaunted, Theoctistus proposed to ordain Constantine as a deacon in the Church and to appoint him to the office of chartophylax (librarian) or secretary to Ignatius, the last of the Byzantine iconoclastic patriarchs. Although initially accepting this offer, because of his disagreement with Ignatius’s iconoclast policies, Constantine mysteriously disappeared. Finally, in 850, he was named professor of philosophy at the imperial academy where he had previously studied. He was only twenty-three years old. Constantine remained at the academy until 855, when he retired to join Methodius in a monastery on Mount Olympus, near the Sea of Marmora in northwestern Turkey, which was the center of monastic life in the ninth century.
As to Methodius, very little is known of his early life. There are only brief references to his activities before 863; nothing exists to illuminate his formative years or his education. It is recorded, however, that he did serve as a provincial governor in the region where he was born. Despite this eminent position, however, Methodius tired of the vicissitudes of worldly life. He became a monk and entered a monastery on Mount Olympus, where he would be joined by Constantine.
Life’s Work
The main achievement of Constantine and Methodius centers on their activities among the Great Moravians of central Europe between 863 and 885. The focus of this effort was primarily religious and linguistic in that they sought to develop a Slavonic liturgy and to train an ecclesiastical hierarchy to support the emerging Christian church in Moravia. From the outset, their work was enmeshed in the religious and political rivalries involving the Byzantines, the German Franks, and the Papacy during the ninth century. Despite these difficulties, the brothers achieved their goals; their success gave rise to the later appellation “Apostles to the Slavs.”
In 862, Rostislav, the king of Great Moravia, appealed to the Byzantine emperor Michael III for a group of missionaries to develop a liturgy and to train an ecclesiastical hierarchy for Moravia. In making this petition, Rostislav specifically requested the inclusion of Constantine and Methodius because their reputations as scholars and linguists had spread well beyond Byzantium. Although Rostislav couched his plea to Michael in religious terms, he was motivated by his own political interests. At issue was his desire to reduce or even eliminate the influence of the Bavarian Franks in his kingdom because their presence threatened Moravian independence. To achieve this goal, however, Rostislav needed to reduce Moravian dependence on the Franks’ ecclesiastical leadership. For their part, the Byzantines were not oblivious to the political and religious advantages of Rostislav’s overture. It offered the prospect for expansion of the Byzantine rite into central Europe, where Rome and Constantinople were rivals for religious authority. At the same time, it presented an opportunity to forge an alliance with Moravia against Bulgaria, whose activities threatened Byzantium. Such were the circumstances confronting Constantine and Methodius as they began their Moravian mission.
On arriving in Moravia in 863, the apostles were warmly received by Rostislav. Before they could begin their work, however, it was necessary to overcome the absence of a written Moravian language. To resolve this difficulty, Constantine turned his attention to the development of a Slavonic alphabet that would correspond to the spoken Slavonic language used by the Moravians. Constantine was well suited for this task; he was fluent in Slavonic because the language was common to Thessalonica.
To derive a Slavonic alphabet, Constantine used the letters of the Greek alphabet as a foundation. Spoken Slavonic, however, had numerous inflected sounds and diphthongs for which there were no Greek equivalents. Therefore Constantine was forced to create additional letters to represent the unique Slavonic sounds. The result was the Glagolitic alphabet, which became the basis for Old Slavonic or Church Slavonic and the precursor to the later Cyrillic alphabet. Constantine’s accomplishment meant that the Moravians now possessed the means to acquire their own liturgy and to educate an independent ecclesiastical hierarchy. The next four years saw the brothers translating critical elements of the Byzantine liturgy into the new Glagolitic script for this purpose. By the autumn of 867, their mission seemingly completed, the apostles departed from Moravia, returning to Constantinople with the new liturgy and a group of disciples who were candidates for ordination. Once ordained, these disciples were to return to Moravia and continue the work begun by Constantine and Methodius.
Unfortunately, the apostles never completed their journey to Constantinople; fate intervened in the form of an invitation from Pope Nicholas I to visit Rome. Turning toward Rome, the brothers intended to remain there briefly and then continue their journey to Constantinople. Instead, the Roman sojourn lasted more than two years and had a major impact on their work in Moravia. As in 863, the primary cause of this situation was the continuing rivalries in central Europe. Although Constantine and Methodius attempted to remain above these conflicts and intrigues, they could not escape the impact of events.
By the time the apostles arrived in Rome in late December, 867, or early January, 868, Nicholas was dead and Adrian II was the new pope. The brothers had accepted Nicholas’s invitation in part because they wished an opportunity to ordain the Moravian disciples. By doing that in Rome, the new clerics could return to Moravia and begin their work much sooner than had they proceeded to Constantinople. These hopes were quickly realized because Adrian approved not only the ordination but also Constantine’s Slavonic liturgy. Certainly the reputation of Constantine and Methodius contributed to Adrian’s decision. It is also possible, however, that Adrian sensed an additional political advantage for Rome. Granting a Slavonic liturgy and an ecclesiastical hierarchy for Moravia would neutralize Frankish influence there. Moreover, it afforded an opening for the extension of Roman ecclesiastical authority into the region by reversing the earlier rejection of Moravian requests for a religious mission from Rome, a rejection that had originally prompted the Byzantine mission.
Adrian’s actions marked the high point of the brothers’ stay in Rome as summer, 868, brought distressing news from Constantinople. Reports told of the overthrow and assassination of Michael III by his coruler, Basil the Macedonian, in the previous September. No less disturbing was the deposing of Patriarch Photius and his replacement by the iconoclast Ignatius. The cause of these events was the conflict between Constantinople and the Papacy over Roman religious penetration of Bulgaria, a circumstance both Photius and Michael adamantly opposed. By removing the two men, the new leadership in Constantinople hoped to improve relations with Rome and to eliminate Roman influence in Bulgaria. The effect of the developments was to leave Constantine and Methodius in limbo. They were uncertain of their status in Constantinople and of the future of their work. Meanwhile, Constantine, already ill, continued to decline. He died in Rome on February 14, 869. Before he died, however, he became a monk and received the name Cyril in recognition of his new spiritual standing.
The burden of their work fell to Methodius. By now it was certain that he could not return to Constantinople, but he did not wish to see the work in Moravia disrupted. It was important, he believed, for the Slavs to have their own liturgy and ecclesiastical leadership. With this in mind, he accepted the appointment by Adrian to return to Moravia as papal legate. Methodius remained there until his death on April 6, 884. It was this final demonstration of spiritual concern that ensured the preservation of the Slavonic liturgy among the Slavic peoples.
Significance
In retrospect, the significance of the work of Cyril and Methodius was not confined to their activities in central Europe. Although their mission was a major factor in the development and expansion of Christianity among the Moravians and the other Slavic peoples that inhabited the region, the broader impact of the brothers was to the east in Bulgaria and Russia. The reason for this observation can be found in the historical events that transpired after the ninth century. First, Rome was able to assert its religious and ecclesiastical influence in central Europe. The effect was the latinization of these peoples culturally, linguistically, and liturgically. Byzantine influence, never really strong there, declined. Second, the disciples of Methodius, driven eastward in the late ninth and early tenth centuries, found refuge in Bulgaria, where their Glagolitic alphabet and Slavonic liturgy took root and flourished. During the next two centuries, these elements gave rise to a distinctive Slavic culture. For the first time in their history, the Slavs had a written language. In turn, this language led to the evolution of a national literature in the form of hagiography and historical chronicles. The result was the emergence in Bulgaria of a Slavic unity where none had previously existed. In the twelfth century, the expansion of the Slavonic language and culture fostered a similar cultural and linguistic unity in Kievan Russia. Subsequently, this Slavic unity was transmitted to medieval Russia though the Russian Orthodox church and became one of the significant unifying forces of early Muscovite development. Thus, Cyril and Methodius richly deserve the appellation “Apostles to the Slavs.”
Bibliography
Duichev, Ivan, ed. Kiril and Methodius, Founders of Slavic Writing: A Collection of Sources and Critical Studies. Translated by Spass Nikolev. New York: Columbia University Press, 1985. Contains a tenth century hagiography on the life and acts of Cyril by a probable disciple of Methodius. Also includes an encomium or eulogy by the same author on the death of Methodius.
Farrugia, Edward G., Robert F. Taft, and Gino K. Piovesana, eds. Christianity Among the Slavs: The Heritage of Saint Cyril and Methodius. Rome: Pontifical Oriental Institute, 1988. A collection of addresses and papers presented at the international congress held on the eleventh centenary of the death of Saint Methodius. Examines the work and lives of Methodius and his brother. Bibliography and index.
Obolensky, Dimitri. Byzantium and Slavic Christianity: Influence of Dialogue? Berkeley, Calif.: Patriarch Athenagoras Orthodox Institute, 1998. This work, published as part of a lecture series, looks at the lives and works of Saints Cyril and Methodius, focusing on their influence on the Slavs.
Obolensky, Dimitri. Byzantium and the Slavs. Crestwood, N.Y.: St. Vladimir’s Seminary Press, 1994. Three chapters in this work on Byzantium deal with Saints Cyril and Methodius, including one on their influence in Russia. Bibliography and index.
Tachiaos, Anthony-Emil N. Cyril and Methodius of Thessalonica: The Acculturation of the Slavs. Crestwood, N.Y.: St. Vladimir’s Seminary Press, 2001. A biography of the two saints that touches on their influence on the Slavs. Bibliography.
Tachiaos, Anthony-Emil N., ed. The Legacy of Saints Cyril and Methodius to Kiev and Moscow: Proceedings of the International Congress on the Millennium of the Conversion of Russia to Christianity. Thessalonika, Greece: Hellenic Association for Slavic Studies, 1992. A set of papers on Saints Cyril and Methodius from a conference in 1988.
Vodopivec, Janez. The Holy Brothers Cyril and Methodius, Co-patrons of Europe: Cultural Link Between the East and the West. Rome: Pontificia Universitas Urbaniana, 1985. An examination of the two saints and their influence on the Slavs. Contains Pope John Paul II’s Encyclical epistle Slavorum Apostoli, in which the pope writes of the saints and their work as apostles.