the chief of the Egyptian Gnostics in the second century. The place of his birth is unknown; some call him a Syrian, others a Persian, others an Egyptian. According to Clemens Alex. (Strom. 7:17) he appeared in the reign of Hadrian; Baronius and Pearson suppose him to have begun his heresy in the latter part of the first century. The probable date of his death is A.D. 125-130. He published a book which he called “the Gospel,” and wrote also 24 books exegetical of the Gospel, but whether it was a comment upon his own “Gospel” or upon the four evangelists is uncertain. He left a son, Isidorus, who defended his opinions. Fragments of both Basilides and Isidorus are given in Grabe, Spicileg. saec. 2, p. 37, 64. (Burton, Eccles. Hist. Lect. 15; Burton, Bampton Lectures, note 13.) Our knowledge of Basilides is chiefly derived from Irenaeus (Adv. Haer. 1:24), Epiphanius (Haer. 24), and the newly discovered Philosophoumena (bk. 7) of Hippolytus (q.v.). Eusebius (Hist. Ecc 4:7) speaks of a refutation of Basilides by Agrippa Castor.
He taught that the supreme God, perfect in wisdom and goodness, the unbegotten and nameless Father, produced from his own substance seven aeons of a most excellent nature. According to Irenseus (Adv. Haer. 1:24), from the self-existent Father was born
Martyrs bearing the name of Basilides are mentioned in the old martyrologies on three different days, namely, on 10, 12, and 28 June. Under the last date is placed the long list of Alexandrian martyrs who suffered during the persecution of Septimius Severus, and among these occurs the name of a Basilides. Eusebius gives an entire chapter of his church history (VI, v) to Basilides and Potamiana. After Potamiana had been sentenced to death Basilides, an officer of the court, led her to execution. He showed himself compassionate to Potamiana and kept back the heathen rabble who would have mocked her. Potamiana thanked him and exhorted him to be consoled, for after her death she would entreat the Lord concerning him and would reward his kindness. Shortly after this Basilides was called on to take an oath. He replied that he could not swear, and openly acknowledged himself to be a Christian. When taken before the judge he made an unwavering confession and was thrown into prison. He was visited by several Christians to whom he related that, three days after her martyrdom, Potamiana had appeared to him and had set a crown on his head with the assurance that the Lord would soon take Basilides to Himself. Basilides was then baptized and the next day he was beheaded. In the present Roman martyrology his name appears on 30 June. In the so-called martyrology of St. Jerome and in the present list of Roman martyrs the name of a Basilides appears on 10 and 12 June. On each occasion the name is accompanied by a statement of the locality of the martyrdom at Rome on the Via Aurelia. The names of the companions in martyrdom of Basilides vary on the two different days. The list for 12 June is very involved; apparently the same martyr is referred to on both days and for some reason his name is repeated on 12 June. The Acts of the martyrdom of a Roman Basilides are still in existence; they have, however, no historical existence and belong to a date considerably later.----------------------------------- EUSEBIUS, Hist. eccl. (Turin, 1746), VI, v, ed. VALESIUS, I, 228; Martyrol. Hieronym., ed. DE ROSSI and DUCHESNE in Acta SS., November, II, 77; MOMBRITIUS, Sanctuarium (Venice, 1474); Acta SS., Junii, II, 508 sqq.; ALLARD, Hist. des persecutions (Paris, 1866), II, 76 sqq. J.P. KIRSCH Transcribed by Steven Fanning The Catholic Encyclopedia, Volume IICopyright © 1907 by Robert Appleton CompanyOnline Edition Copyright © 2003 by K. KnightImprimatur. +John M. Farley, Archbishop of New York
