Holy Mary of the Snows: A Roman Miracle Known in Alfonso X’s Kingdom of Castile and Leon

This article addresses Alfonso’s miracle about a vision of the Virgin to the Pope and Emperor which foretold the snow which was to fall in August in Rome. Little has been written about the feast of Holy Mary of the Snows with regard to the Cantigas de Santa Maria (CSM), the Marian miracle collection compiled by Alfonso X, King of Castile and Leon. However, the feast of Holy Mary of the Snows begins to appear in Castilian and Leonese breviaries from the very beginning of the fourteenth century, shortly after the death of Alfonso in 1284. Comparing the near-contemporary versions of the miracle reveals that Alfonso’s version of the miracle foregrounds the relationship of the Pope and Emperor, whereas the liturgical versions include the vision of the Pope as well as of the Patrician John and his wife. This article concludes that Alfonso, seeking to promote his imperial ambitions, may have brought this miracle and others back to Castile. No trace of the miracle exists in the kingdom before Alfonso’s CSM. Alfonso sought to emphasize the collaboration of Pope and Emperor which suited his purpose. The foundation of the Basilica dedicated to the Virgin in Rome paralleled the cathedral founded in the city of Seville, recently conquered by his father.