This is an often suspect
church chronology. It represents a lot of work, even if it is biased against the Catholic Church. Take the Catholic bits (and more) with a grain of salt.
110 Marcion, leader of a heretical sect, born. Died 165. Marcion rejected the Old Testament God, the creator of this miserable world, and hence he rejected the Old Testament also. He believed it impossible that Jesus, the redeemer of mankind, had been born of a woman.
Papias, bishop of Hierapolis in Phrygia, lived in this era. He is the source of the tradition that Mark's gospel was based on Peter's testimony. Papias was a chiliast. Eusebius of Caesarea was of the opinion that Papias learned his millennialism from a certain John the presbyter. According to this view, others (including Irenaeus - see 177 below) understood Papias - incorrectly - to have gotten his view from the apostle John, and so were convinced there would be a literal millennium.
112 Pliny the Younger (61/62 - 113), governor of Bithynia, wrote a letter to the emperor Trajan. He stated that the Christians "are accustomed on a stated day to meet before daylight, to sing antiphonally a hymn to Christ as to God, and to bind themselves by a sacrament not to commit any wickedness."
118 4th Persecution of Christians, under the emperor Hadrian (117-138). According to Severus, Hadrian set up “images of demons” on the temple mount and Golgotha. Hadrian also set guards to prevent Jews from approaching Jerusalem.
127-42 Ptolemy, an astronomer, geographer, and mathematician flourished in Alexandria. His earth-centered model of the universe held the field until 1542, when Copernicus supplied a solar-centered model. Ptology's estimate of the earth's circumference was 30 percent below the actual value.
135 Another Jewish rebellion began, this one led by Bar-Cocheba.
136 Second conquest and destruction of Jerusalem by the Romans. More than 500,000 put to the sword. The emperor Hadrian forbade the Jews to return to the Jerusalem, and they dispersed over the earth.
In this year the Alexandrian philosopher Valentinus, a baptized Christian, but Gnostic thinker, moved to Rome. He left the Christian community in 140, when another was chosen bishop of Rome. After departing Rome around 160, Valentinus continued to develop his religious philosophy, reportedly writing The Gospel of Truth. His system, like other Gnostic views, supposed a fundamental dualism between good and evil and salvation through gnosis. He was refuted by Irenaeus and Hippolytus.
Basilides was another Gnostic philosopher from Alexandria. The school he founded, known as the Basilidians, still existed in Alexandria in the fourth century. Basilidians are thought to be the first to celebrate Jesus' baptism on January 6 (or Jan 10), keeping an all-night vigil. Basilides used the term "Abraxas" (thought to have magical significance) for God.
Still another Gnostic group saw Simon Magus (Acts 8.9-24) as the true God or Father. God had generated the first thought (Ennoia) to create the angels, who, in turn, were to create the universe. Through jealousy, the angels imprisoned Ennoia in human flesh, and she was doomed to transmigrate to a new body upon the death of the old one. To free her, God had entered creation in the form of Simon, and he offered salvation to mankind in exchange for their recognition of his deity.
Mithraism became increasingly popular within the Roman empire, particularly among soldiers, from around this year. In 307, Diocletian dedicated a temple to Mithra at Carnuntum on the Danube. Mithra was a sun god, and his faith emphasized loyalty to the emperor. After the emperors became Christians, Mithraism faded. Mithra had been the most important Persian god prior to Zoroaster's time. Mithric sanctuaries were caverns. Only men attended the ceremonies of this faith, and there was, apparently, no religious hierarchy.
157 Montanus, leader of a heretical sect, flourished. He was a Phrygian. Together with two women, Prisca and Maximilla, he entered ecstatic states and spoke as moved by the Holy Spirit. They were chiliasts, believing that the new Jerusalem would land in Phrygia. They taught that disagreement with their ecstatic utterances was blasphemy against the Spirit. The sect he founded continued to exist at least until 722.
160 By this year, the grave of Peter was marked by a shrine.
The annual celebration of Easter may have began in Rome around this year (see 190). It had been celebrated in Asia Minor much earlier.
165-180 The Plague of Antoninus. Smallpox was introduced into the western part of the Roman empire, possibly by Roman soldiers. According to Galen, one-fourth to one-third of the population of Italy died of smallpox during this period.
177 Irenaeus, a pupil of Polycarp, was elected bishop of Lyons, then called Lugdunum, in Gaul. Born in 130. Died 200. [There is quite a long entry for Irenaeus.]
179 Conversion of Bardesanes (154-222) to Christianity. Unfortunately, he was influenced by Gnostic thought, denying the immediate creation by God of the universe and Satan, introducing a series of intermediate beings instead. Bardesanes thus became a leading figure in Syrian Gnosticism.
Mandaeanism originated sometime during the first three centuries in the Middle East. In this religion, salvation is of the soul alone, through esoteric knowledge. There is a system of intervening spiritual beings (Archons) between the soul and God. In these points, Mandaeanism is similar to Gnosticism. Unlike many Gnostic systems, however, sexual promiscuity is forbidden and marriage is encouraged. Mandaeans consider Jesus a false messiah, but they have great respect for John the Baptist.
185 Tertullian (160-230), a native of Carthage, converted to Christianity. According to Jerome, he was a priest. Yet it is clear that he was married.
200 In this era, the population of Rome may have been as much as 1,000,000. Alexandria and Antioch may have had populations of 300,000. The population of Rome fell dramatically in the late fifth and early sixth centuries. (See 552.)