Catholic Encyclopedia: St. Willibrord: Article on the Benedictine missionary and bishop, who died in 739.Catholic Online: St. Willibrord: Short biography.The Life of Willibrord: Modern English translation of Alcuin's hagiography from the Internet Medieval Sourcebook.Willibrord: Illustrated profile, with links.Willibrord (or Wilbrord), St: Biographical entry from the 1911 Encyclopædia Britannica. Has a few scanner errors.Willibrord of Utrecht: Biography, by Karen Rae Keck.Willibrord of Utrecht, archbishop and missionary: Anglican perspective. Brief biography, and prayers.