Harpocrates (Gr.). The child Horus or Ehoou represented with a finger on his mouth, the solar disk upon his head and golden hair. He is the “god of Silence” and of Mystery. (See “Horus”). Harpocrates was also worshipped by both Greeks and Romans in Europe as a son of Isis.
Source: H.P.Blavatsky - The Theosophical Glossary