Our Lady of Guadalupe first identified herself as Mother of God and Mother of all mankind when she appears on the Tepeyac Hill in Mexico in 1531. An indigenous peasant, Juan Diego, saw a brilliant figure on the hill. After that, Juan Diego visited Juan de Zumárraga, who was the archbishop of what is now Mexico City. Zumárraga rejected him in disbelief and asked the future Saint to provide proof of his story and proof of the identity of the Lady.
Miracle:
The first apparition occurred on the morning of December 9, 1531 (on the Julian calendar, which would be December 19 on the Gregorian calendar used today), when it is said that a native Mexican peasant named Juan Diego experienced a vision of a young woman at a place called the Hill of Tepeyac, which would become part of Villa de Guadalupe, in a suburb of Mexico City.