Pagan

"The beliefs and practices of pagan origin that survived Christianity   were those that the men of the first Church called "pagan", that is, typical of the inhabitants of the "pagi", of the peasants. It was more difficult for the higher mythological systems, the great theogonies, to remain alive. The belief in a numen of the fountains, of rivers, of forests, or caves (or a family cult) could survived more easily than the complex cults of the Greeks and Romans". 

-Julio Caro Baroja.