Hallbjorn Halftroll
From Wikipedia, the free encyclopedia
Hallbjorn Halftroll or Hallbjorn Ulfsson was an early ninth century Norwegian hersir. He was the father of Ketil Trout of Hrafnista. He is mentioned in the Ketils saga hœngs as well as Egils Saga and the Landnamabok. His nickname "Halftroll" comes from certain legends that ascribe jotun ancestry to his family.