Bible Encyclopedias
Long Brothers, the Four.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

Among the leading men of the spiritualists, the four "Long Brothers" must not be overlooked: Dioscorus, Ammonius, Eusebius, and Euthymius, who were as distinguished by their influence as they were eminent in stature. 'he secret of their power was in their inflexible honesty, combined with hearty and unflinching faith in the system of their choice. See each name.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Long Brothers, the Four.'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​l/long-brothers-the-four.html. Harper & Brothers. New York. 1870.