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Church History Timeline
Follow the Church from Pentecost to today: the early centuries, the councils, apostolic succession, and the spread of Christianity.
AD 1–99
AD 30-67
Apostolic succession
St. Peter, first Bishop of Rome
Named the rock upon whom Christ builds his Church and given the keys of the kingdom, Peter travels to Rome, leads the Church there, and is martyred under Nero.
Rome
Matthew 16:18-19
c. AD 33
Early Christianity
Pentecost
The Holy Spirit descends on the apostles gathered with Mary in Jerusalem, and Peter preaches to the crowds; about three thousand are baptized, marking the public birth of the Church.
Jerusalem
Acts 2:1-41
AD 33
Spread of Christianity
Jerusalem: the birthplace of the Church
Following Pentecost, Jerusalem becomes the first center of Christian life, led by the apostles and James 'the brother of the Lord,' before the community disperses under persecution.
Jerusalem
c. AD 34-36
Early Christianity
Martyrdom of St. Stephen
Stephen, one of the seven deacons, becomes the Church's first martyr, stoned outside Jerusalem while Saul of Tarsus looks on approvingly.
Jerusalem
Acts 7:54-60
c. AD 40s
Spread of Christianity
Antioch: where believers are first called Christians
A major missionary hub where Paul and Barnabas teach, Antioch becomes the base for the first missionary journeys to Asia Minor and the place where the term 'Christian' first arises.
Antioch
Acts 11:26
c. AD 49-50
Early Christianity
Council of Jerusalem
The apostles and elders, led by Peter and James, meet to settle whether Gentile converts must be circumcised, deciding they need not follow the Mosaic ceremonial law — the Church's first council.
Jerusalem
Acts 15:1-29
c. AD 40s-60s
Spread of Christianity
Rome: the imperial capital receives the Gospel
A Christian community forms in Rome even before Paul's arrival, and the presence of both Peter and Paul establishes Rome's enduring place at the center of the Church.
Rome
c. AD 50s-60s
Spread of Christianity
Alexandria: a center of Christian learning
Traditionally founded by St. Mark, the church of Alexandria becomes a leading intellectual center, home to the catechetical school where Clement and Origen taught.
Alexandria
c. AD 50s-100
Spread of Christianity
Ephesus: home of John and Mary
Evangelized by Paul and later home to the apostle John, Ephesus is traditionally associated with Mary's final years and becomes the site of the Council of 431 that honored her as Theotokos.
Ephesus
c. AD 64-67
Early Christianity
Martyrdom of Peter and Paul
During Nero's persecution following the fire of Rome, Peter is crucified (traditionally upside down) and Paul is beheaded, both in Rome, sealing their witness to Christ.
Rome
c. AD 67-76
Apostolic succession
Pope Linus
Named by Irenaeus as Peter's immediate successor, and mentioned by St. Paul in his second letter to Timothy, Linus governs the Roman church after the apostles' martyrdom.
Rome
2 Timothy 4:21
AD 70
Early Christianity
Destruction of the Jerusalem Temple
Roman legions under Titus destroy the Second Temple, ending the sacrificial cult of Israel and confirming Christ's prophecy in the Gospels; Jewish and Christian communities increasingly separate.
Jerusalem
Luke 21:5-6
c. AD 76-88
Apostolic succession
Pope Anacletus (Cletus)
The third bishop of Rome according to Irenaeus' list, traditionally remembered for organizing the clergy of Rome and, according to later tradition, for ordaining several priests.
Rome
c. AD 88-99
Apostolic succession
Pope Clement I
The fourth bishop of Rome, whose letter to the Corinthian church is the earliest surviving papal document, demonstrating Rome's early exercise of authority over other churches.
Rome
c. AD 50-100
Early Christianity
The Didache composed
This early Christian manual, the 'Teaching of the Twelve Apostles', gives instructions on baptism, fasting, the Eucharist, and church order, reflecting the life of the earliest communities.
c. AD 96
Early Christianity
Clement of Rome writes to Corinth
Pope Clement I intervenes with authority in a dispute in the Corinthian church, deposing of unjustly removed presbyters — early evidence of Rome's role in governing distant churches.
Rome / Corinth
100s
c. AD 107-110
Early Christianity
Ignatius of Antioch's letters
En route to martyrdom in Rome, Bishop Ignatius writes seven letters using the term 'Catholic Church' for the first time and insisting on unity with the bishop and the reality of the Eucharist as Christ's flesh.
Antioch to Rome
c. AD 155-156
Early Christianity
Martyrdom of Polycarp
The elderly bishop of Smyrna, a disciple of the apostle John, is burned and stabbed to death for refusing to curse Christ, in one of the earliest detailed martyrdom accounts outside the New Testament.
Smyrna
c. AD 155
Early Christianity
Justin Martyr's First Apology
Justin describes the Sunday liturgy to the emperor: readings, a homily, prayers, and the Eucharist, which is not 'common bread and drink' but the body and blood of the incarnate Jesus.
Rome
c. AD 180
Early Christianity
Irenaeus writes Against Heresies
Bishop Irenaeus of Lyon refutes Gnosticism by appealing to apostolic succession and the public teaching handed down in churches founded by the apostles, especially the church of Rome.
Lyon
c. AD 180
Apostolic succession
Irenaeus records the list of Roman bishops
In Against Heresies, Irenaeus lists the unbroken succession of Roman bishops from Peter to his own time as proof against Gnostic claims to secret teaching.
Lyon
2nd-3rd century
Spread of Christianity
North Africa: a vibrant early Christian region
Carthage and the surrounding region produce major early theologians — Tertullian, Cyprian, and later Augustine — before the region's Christian population is greatly diminished after the Arab conquests.
North Africa
c. AD 170-200
Early Christianity
Muratorian Fragment
This early list of recognized New Testament writings shows the Church already discerning a canon of Scripture, though its boundaries were not yet universally fixed.
200s
c. AD 197-220
Early Christianity
Tertullian's apologetic writings
The North African writer Tertullian defends Christianity against pagan critics, coins Latin theological vocabulary including 'Trinity,' and famously observes that the blood of martyrs is seed for the Church.
Carthage
c. AD 220-250
Early Christianity
Origen's biblical scholarship
The Alexandrian scholar Origen produces the Hexapla, extensive scriptural commentaries, and systematic theology, shaping Christian exegesis for centuries despite later controversies over some of his speculative views.
Alexandria
AD 250-251
Early Christianity
Decian Persecution
Emperor Decius requires all citizens to sacrifice to the gods and obtain certificates (libelli), producing widespread martyrdoms and also many lapsi who later sought reconciliation with the Church.
c. AD 248-258
Early Christianity
Cyprian of Carthage
Bishop Cyprian writes On the Unity of the Catholic Church, defending the unity of the episcopate centered on Peter's chair, before his own martyrdom under Valerian's persecution.
Carthage
300s
AD 301
Spread of Christianity
Armenia becomes the first Christian nation
Through the preaching of St. Gregory the Illuminator, King Tiridates III converts, and Armenia adopts Christianity as its state religion before the Roman Empire does.
Armenia
AD 303-311
Early Christianity
Diocletianic Persecution
The last and most severe empire-wide persecution destroys churches and scriptures and executes many Christians, producing a great number of martyrs before the persecution collapses.
AD 313
Early Christianity
Edict of Milan
Emperors Constantine and Licinius grant religious toleration throughout the empire, ending state persecution of Christians and permitting the Church to worship openly and reclaim confiscated property.
Milan
c. AD 318-320
Early Christianity
Arian controversy begins
The Alexandrian priest Arius teaches that the Son was created and not co-eternal with the Father, sparking a crisis that would require an ecumenical council to resolve.
Alexandria
AD 325
Ecumenical councils
First Council of Nicaea
Called by Constantine, the bishops condemn Arianism and declare the Son 'consubstantial' (homoousios) with the Father, producing the core of the Nicene Creed.
Nicaea
4th century
Spread of Christianity
Christianity reaches Ethiopia
Frumentius, consecrated bishop by Athanasius of Alexandria, evangelizes the Kingdom of Aksum, establishing one of the oldest continuously Christian nations in the world.
Ethiopia
AD 366-384
Apostolic succession
Pope Damasus I
Damasus commissions Jerome's Latin translation of the Bible (the Vulgate) and presides over councils that reaffirm the primacy of the Roman see.
Rome
AD 367
Early Christianity
Athanasius' Festal Letter lists the New Testament canon
St. Athanasius of Alexandria's Easter letter is the first surviving document to list exactly the 27 books that make up the New Testament as we have it today.
Alexandria
AD 381
Ecumenical councils
First Council of Constantinople
The council completes the Nicene Creed, affirms the full divinity of the Holy Spirit, and condemns remaining forms of Arianism and Apollinarianism.
Constantinople
c. AD 397-400
Church history
Augustine writes the Confessions
St. Augustine of Hippo's autobiographical work traces his conversion from Manichaeism, deeply shaping Western theology on grace, sin, and the soul's restlessness for God.
Hippo
400s
AD 431
Ecumenical councils
Council of Ephesus
The council condemns Nestorius' teaching that separated Christ's two natures into two persons, and formally declares Mary Theotokos, Mother of God.
Ephesus
5th century
Spread of Christianity
St. Patrick evangelizes Ireland
Having once been a captive slave in Ireland, Patrick returns as a missionary bishop, converting much of the island, which becomes a major center of monastic learning and later missionary activity.
Ireland
AD 440-461
Apostolic succession
Pope Leo the Great
Leo's Tome shapes the Christology defined at Chalcedon, and he famously persuades Attila the Hun to turn back from Rome, exemplifying the growing pastoral and diplomatic authority of the papacy.
Rome
AD 451
Ecumenical councils
Council of Chalcedon
The council defines Christ as one Person in two natures, divine and human, 'without confusion, without change, without division, without separation,' rejecting Monophysitism.
Chalcedon
AD 476
Church history
Fall of the Western Roman Empire
The deposition of the last Western emperor, Romulus Augustulus, leaves the Church as one of the few stable institutions in the West, increasingly responsible for civic order and charity.
Rome
500s
c. AD 529
Church history
St. Benedict founds Monte Cassino and writes his Rule
Benedict of Nursia's monastic rule of prayer and work becomes the foundation of Western monasticism, preserving learning and evangelizing Europe through the following centuries.
Monte Cassino
AD 553
Ecumenical councils
Second Council of Constantinople
Convoked by Emperor Justinian, the council condemns certain writings associated with Nestorianism (the 'Three Chapters') and reaffirms Chalcedon's Christology.
Constantinople
AD 590-604
Church history
Pontificate of Gregory the Great
Pope Gregory I reforms the liturgy, sends missionaries to England, negotiates with invading Lombards, and writes influential pastoral and theological works, shaping the medieval papacy.
Rome
AD 590-604
Apostolic succession
Pope Gregory the Great
Calling himself 'servant of the servants of God,' Gregory reforms the liturgy and administration of the Church and sends missionaries such as Augustine of Canterbury to England.
Rome
AD 597
Spread of Christianity
Augustine of Canterbury evangelizes England
Sent by Pope Gregory the Great, Augustine leads a mission to the Anglo-Saxons, baptizes King Æthelberht of Kent, and becomes the first Archbishop of Canterbury.
England
600s
AD 680-681
Ecumenical councils
Third Council of Constantinople
The council condemns Monothelitism, teaching that Christ has two wills, divine and human, in accord with his two natures.
Constantinople
700s
AD 787
Ecumenical councils
Second Council of Nicaea
The council restores and defends the veneration of icons after the iconoclast crisis, distinguishing the honor given to images from the adoration due to God alone.
Nicaea
800s
9th century
Spread of Christianity
Cyril and Methodius evangelize the Slavs
The brothers from Thessalonica devise the Glagolitic alphabet, translate Scripture and the liturgy into a Slavic language, and become known as the 'Apostles to the Slavs.'
Great Moravia
AD 869-870
Ecumenical councils
Fourth Council of Constantinople
The council addresses the deposition of Patriarch Photius and reaffirms the primacy of the see of Rome, amid rising tensions between East and West.
Constantinople
1000s
AD 1054
Church history
East-West Schism
Mutual excommunications between Rome and Constantinople, arising from disputes over papal authority, the filioque, and liturgical practices, harden into a lasting division between Catholic and Orthodox Christianity.
Constantinople
AD 1073-1085
Apostolic succession
Pope Gregory VII
A key reformer of clerical discipline and papal authority, Gregory VII confronts Emperor Henry IV during the Investiture Controversy and asserts the Church's freedom from lay control.
Rome
AD 1075-1122
Church history
Investiture Controversy
Pope Gregory VII confronts Emperor Henry IV over lay appointment of bishops, famously reconciled at Canossa in 1077, before the dispute is finally settled by the Concordat of Worms in 1122.
AD 1095-1099
Church history
First Crusade
Pope Urban II calls Western Christians to aid the Byzantine Empire and recover Jerusalem, leading to the capture of the city in 1099 and the establishment of Crusader states.
Jerusalem
1100s
AD 1123
Ecumenical councils
First Lateran Council
The first ecumenical council held in the West ratifies the Concordat of Worms, ending the Investiture Controversy over lay appointment of bishops.
Rome
AD 1139
Ecumenical councils
Second Lateran Council
The council condemns the schism of antipope Anacletus II, reforms clerical discipline, and reinforces clerical celibacy.
Rome
AD 1179
Ecumenical councils
Third Lateran Council
The council establishes that a two-thirds majority of cardinals is required to elect a pope, addressing disputed elections, and condemns the Cathar heresy.
Rome
AD 1198-1216
Apostolic succession
Pope Innocent III
Presiding at the height of medieval papal power, Innocent III convenes the Fourth Lateran Council and approves the new mendicant orders of Francis and Dominic.
Rome
1200s
AD 1215
Ecumenical councils
Fourth Lateran Council
Under Innocent III, the council formally uses the term 'transubstantiation,' mandates annual confession and Communion, and enacts major reforms of Church life.
Rome
AD 1245
Ecumenical councils
First Council of Lyon
Pope Innocent IV convenes the council, which excommunicates and deposes Emperor Frederick II amid conflict between the papacy and the empire.
Lyon
c. AD 1265-1274
Church history
Thomas Aquinas writes the Summa Theologiae
The Dominican friar's masterwork synthesizes faith and Aristotelian reason, becoming the most influential systematic theology in the Catholic tradition.
Paris / Naples
AD 1274
Ecumenical councils
Second Council of Lyon
The council achieves a short-lived reunion between Rome and Constantinople and issues reforms for papal conclaves, though the Eastern reunion later collapses.
Lyon
1300s
AD 1309-1377
Church history
Avignon Papacy
Under French political pressure, seven successive popes reside in Avignon rather than Rome, a period later criticized for excessive French influence over the papacy.
Avignon
AD 1311-1312
Ecumenical councils
Council of Vienne
Under pressure from King Philip IV of France, the council suppresses the Knights Templar and addresses reform of religious orders and clergy.
Vienne
AD 1378-1417
Church history
Great Western Schism
Rival claimants to the papacy, at times three simultaneously, divide Western Christendom until the Council of Constance restores unity under Pope Martin V.
1400s
AD 1414-1418
Ecumenical councils
Council of Constance
The council ends the Great Western Schism by securing the resignation or deposition of rival claimants and electing Pope Martin V as sole pontiff.
Constance
AD 1431-1445
Ecumenical councils
Council of Basel-Ferrara-Florence
Moving between cities, the council achieves a temporary reunion with the Greek Church and defines Catholic teaching on purgatory and the papal primacy.
Basel, Ferrara, Florence
c. AD 1455
Church history
Gutenberg Bible printed
Johannes Gutenberg's movable-type printing of the Latin Vulgate dramatically increases the availability of Scripture and Christian literature across Europe.
Mainz
1500s
AD 1493-1600s
Church history
Catholic missions to the Americas
Missionaries — Franciscans, Dominicans, and later Jesuits — evangelize the Americas, founding missions and dioceses; figures like Bartolomé de las Casas also become prominent defenders of indigenous rights.
The Americas
AD 1512-1517
Ecumenical councils
Fifth Lateran Council
Meeting on the eve of the Reformation, the council calls for reform of Church discipline and abuses but achieves limited practical results before Luther's protest.
Rome
AD 1517
Church history
Luther's Ninety-Five Theses
Martin Luther publishes theses criticizing the sale of indulgences, an event traditionally marking the start of the Protestant Reformation and the fracturing of Western Christian unity.
Wittenberg
16th century
Spread of Christianity
Evangelization of the Americas
Following Spanish and Portuguese colonization, missionaries evangelize across the Americas, founding dioceses, universities, and missions, deeply shaping the religious culture of Latin America.
The Americas
AD 1531
Church history
Our Lady of Guadalupe
According to the traditional account, the Virgin Mary appears to Juan Diego at Tepeyac near Mexico City, an event followed by mass conversions among the indigenous population of Mexico.
Mexico
AD 1541-1552
Church history
St. Francis Xavier's missions to Asia
The Jesuit missionary evangelizes in India, Southeast Asia, and Japan, becoming one of the most influential missionaries in Church history before dying en route to China.
India, Japan
AD 1545-1563
Ecumenical councils
Council of Trent
Responding to the Protestant Reformation, the council defines the canon of Scripture, the doctrine of justification, the seven sacraments, and enacts sweeping reforms of clerical discipline and seminaries.
Trent
AD 1546
Church history
Trent defines the canon of Scripture
In response to Protestant rejection of the deuterocanonical books, the Council of Trent formally defines the canon of 73 books as the inspired Scripture recognized by the Catholic Church.
Trent
1700s
AD 1773
Church history
Suppression of the Jesuits
Under pressure from Bourbon monarchies, Pope Clement XIV suppresses the Society of Jesus; it is later restored by Pope Pius VII in 1814.
1800s
AD 1846-1878
Apostolic succession
Pope Pius IX
The longest-reigning pope in history after Peter, Pius IX defines the dogma of the Immaculate Conception and convenes the First Vatican Council, which defines papal infallibility.
Rome
AD 1869-1870
Ecumenical councils
First Vatican Council
The council defines papal infallibility when the pope teaches ex cathedra on faith or morals, and affirms the harmony of faith and reason, before being suspended by the Franco-Prussian War.
Rome
AD 1870
Church history
Loss of the Papal States
The Kingdom of Italy annexes Rome, ending centuries of papal temporal sovereignty; Pope Pius IX considers himself a 'prisoner of the Vatican' until the Lateran Treaty of 1929.
Rome
1900s
AD 1929
Church history
Lateran Treaty
Pope Pius XI and Mussolini's Italy sign the Lateran Treaty, establishing Vatican City as an independent sovereign state and resolving the 'Roman Question.'
Rome
AD 1962-1965
Ecumenical councils
Second Vatican Council
Convoked by John XXIII, the council issues documents on liturgy, the nature of the Church, divine revelation, and the Church's relation to the modern world and other religions.
Rome
AD 1978-2005
Church history
Pontificate of John Paul II
The first non-Italian pope in over 450 years, John Paul II travels widely, promotes new evangelization, contributes to the fall of Communism in Eastern Europe, and canonizes many saints.
AD 1992
Church history
Catechism of the Catholic Church published
Promulgated by Pope John Paul II, the Catechism offers a comprehensive, unified presentation of Catholic doctrine drawing on Scripture, the Fathers, and the Second Vatican Council.
Rome
2000s
AD 2013-present
Apostolic succession
Pope Francis
The first pope from the Americas and first Jesuit pope, Francis emphasizes mercy, care for the poor, and the environment, continuing the unbroken line of succession from Peter into the present day.