Assumption origins

"An intriguing corpus of literature on the final lot of Mary is formed by the apocryphal Transitus Mariae. The genesis of these accounts is shrouded in history’s mist. They apparently originated before the close of the fifth century, perhaps in Egypt, perhaps in Syria, in consequence of the stimulus given Marian devotion by the definition of the divine Maternity at Ephesus. The period of proliferation is the sixth century. At least a score of Transitus accounts are extant, in Coptic, Greek, Latin, Syriac, Arabic, Ethiopic, and Armenian. Not all are prototypes, for many are simply variations on more ancient models" (Juniper Carol, O.F.M. ed., Mariology, Vol. II (Milwaukee: Bruce, 1957), p. 144).