There are many forms of Wicca, but most share a worship of the divine feminine, or Goddess, and a reverence for nature and its cycles. It is traditionally believed to be based on the symbols, celebrations, beliefs and deities of ancient Celtic peoples. Many scholars consider it the largest segment of neo-paganism, saying it can be traced back to Gardnerian Witchcraft, founded in the United Kingdom during the late 1940s.
REFERENCE: Religion Stylebook