Aetians
Charles Buck Theological Dictionary [1]
Those who maintained that the Son and Holy Ghost were in all things dissimilar to the Father. They received their name, from Aetius, one of the most zealous defenders of Arianism, who was born in Syria, and flourished about the year 336. Besides the opinions which the Aetians held in common with the Arians, they maintained that faith without works was sufficient to salvation; and that no sin however grievous, would be imputed to the faithful. Aetius, moreover, affirmed that what God had concealed from the apostles, he had revealed to him.
Watson's Biblical & Theological Dictionary [2]
another branch (as it is said) of Arians, so called from Aetius, bishop of Antioch, who is also charged with maintaining "faith without works," as "sufficient to salvation," or rather justification; and with maintaining "that sin is not imputed to believers." It is added, that he taught God had revealed to him things which he had "concealed from the Apostles;" which, perhaps, is only a misrepresentation of what he taught on the doctrine of divine influences.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [3]
a branch of Arians, named from Aetius of Antioch, one of the most zealous defenders of Arianism, who, after being servant to a grammarian, of whom he learned grammar and logic, was ordained deacon, and at last bishop, by Eudoxus, patriarch of Constantinople (about A.D. 356). He wrote about 300 theological treatises, one of which has been preserved by Epiphanius, who reports that he held that the Son was of a nature inferior to the Father ( Κτιστός , Καὶ Ἐξ Οὐκ Ὄντων , and Ἀνόμοιος Τῷ Πατρὶ Καὶ Ἑτερούσιος ); that the Holy Spirit was but a creature, made by the Father and the Son before all other creatures. Socrates (Ch. Hist. 2, 35) says that, though his "doctrines were similar to those of the Arians, yet, from the abstruseness of his arguments, which they could not comprehend, they pronounced him a heretic." He was said to be well versed in the Aristotelian logic. His doctrine and his disciples were condemned by the Council of Seleucia, A.D. 359. He died about A. D. 367. See Theodoret, 2:24; Neander, Ch. Hist. 2, 399, 409, Cave, Hist. Lit. anno 359; Lardner, Works, 3, 584; Walch, Hist. d. Ketzereien, 2, 660. (See Anomoeans).
