Isis

Isis was an Egyptian goddess who was incorporated into the Roman pantheon, eventually becoming one of the principal deities in the Roman consciousness, supplanting many Greco-Roman goddesses and gaining the epithet of "Queen of Heaven". She was the subject of a secretive but powerful cult. She was associated with fertility, motherhood, love, etc. The Virgin Mary was assigned some of her characteristics (including the symbolism of Isis nursing Horus) to make Christianity easier to assimilate.