In the fourth century St. Ephrem called Mary Lady and Queen and Church Fathers and Doctors continued to use the title. Hymns of the eleventh to thirteenth centuries address Mary as queen: Hail, Holy Queen, Hail, Queen of Heaven, Queen of Heaven. The Dominican rosary and the Franciscan crown as well as numerous invocations in Marys litany celebrate her queenship.
The feast is a logical follow-up to the Assumption and is now celebrated on the octave day of that feast. In his encyclical To the Queen of Heaven, Pius XII points out that Mary deserves the title because she is Mother of God, because she is closely associated as the New Eve with Jesus redemptive work, because of her preeminent perfection and because of her intercessory power.