Santo Domingo (the person) lived as a hermit in the 11th century where Santo Domingo (the city) now stands. He aided the pilgrims on their way to Santiago, building a road, a bridge and a hospital for them.
The next day, as his sorrowful parents left the city, they passed the field were his body was still hanging, and they heard him whisper, "Mother, Father, I'm still alive! Santo Domingo is holding my feet up." They ran back to the city and rushed to the magistrate as he sat down to dinner, shouting of the miracle. The magistrate mocked them, saying that their son was as dead as the roast cock and hen on the table in front of him.
At which point, naturally, the cock and hen leaped up and began to crow. And ever since, in commemoration of this miracle, a cock and hen have been kept in an alcove of the cathedral.
This village has been a rest stop for pilgrims from the beginning, to aid them over the mountains on the boundary of Galicia. Ferdinand and Isabella stopped here on their pilgrimage, and afterwards funded the church here.