Where does the boogeyman really come from?

Phoenix, Arizona The word bogey is linked to many similar words in other European languages, which may be cognates; púca, pooka or pookha (Irish Gaelic), pwca, bwga or bwgan (Welsh), puki (Old Norse), pixie or piskie (Cornish), puck (English), bogu (Slavonic) In Ireland they were a type of faerie that lived in the bog and kidnapped children so they could play with them. They made them stay a year and a day. The bogeyman appeared in the book Mythical Monsters and was after a boy who thought the bogeyman was his big brother playing a joke. Another possible source for the word is the Russian word бог (God), pronounced "boag", rhyming with "rogue". Demonizing things, notions, even the name of God, from Eastern Europe and beyond is not without precedent in Western Europe and North America. In Southeast Asia the term is commonly accepted to refer to Bugis or Buganese pirates, ruthless seafarers of southern Sulawesi, Indonesia's third largest island. These pirates often plagued early English or Dutch trading ships, namely those of the British East India Company or Dutch East India Company, resulting in the European sailors bringing their fear of the "bugi men" back to their home countries.