Approximately 1.5 kilometres west of the village of Prosperous on the R403 stands the medieval ruins of Downings little church. It is distinguished as being the oldest church in the area, dating back to the Normans times. The site of the chapel was once the cell of St. Farnan, who is said to have introduced Christianity to Prosperous possibly as early as the sixth century. Adjacent to the graveyard is St. Farnan’s holy well. It is said that, in his day, he battled with doubt and uncertainty against drunkenness. Local tradition has it that St. Farnan blessed the well at Downings, and called it, “the Well of Sobriety, and saying that "whosoever drank of its water should never again relish the waters of intemperance."