1911 Encyclopædia Britannica (1911)
“ LOTHAIR (825–869) , king of the district called after him Lotharingia, or Lorraine, was the second son of the emperor Lothair I. On his father’s death in 855, he received for his kingdom a district lying west of the Rhine, between the North Sea and the Jura mountains, which was called Regnum Lotharii and early in the 10th century became known as Lotharingia or Lorraine. ”
