Among the feasts of the Blessed Virgin that of the dormitio sanctae Mariae, or of her bodily assumption into heaven, was from very early times the most solemn and the most widely observed. In the time of Pope Sergius I a solemn procession proceeded to St. Mary Major, where Mass was celebrated. It was customary to carry images of the Savior and of His Blessed Mother in this procession; outside of Rome a similar ceremony was observed.
St. Cyriacus was a holy deacon of Rome under Popes Marcellinus and Marcellus. With Largus, Smaragdus, and about 20 others he was crowned with martyrdom in 303, in the persecution of Diocletian. The occasion of the translation of their remains many years later to a church dedicated to them led to the institution of a festival in their memory. St. Cyriacus is invoked for diseases of the eye, and against diabolical possession.
(Source: The New Roman Missal, Rev. F. X. Lasance)