Mithras Grades of Initiation: Jerome (A.D. 345-20 September 420)

... Mithras ... the worshippers were initiated as Raven, Bridegroom, Soldier, Lion, Perseus, Sun, Crab, and Father.

letter cvii, ch. 2, to Laeta

(Schaff, Philip, & Wace, Henry (Eds.), A Select Library of Nicene and Post-Nicene Fathers of the Christian Church, Second Series, Edinburgh: T & T Clark, New York: Charles Scribner's Sons, 1912, vol. 6, p. 190).