from Old French, which means the Anglo, or a man from England,north Germany, as in Jutes, Angles and Saxons who invaded Britan and norther France. Some gave the name to Normandy, les Normands, or Norsemen. Some who were Englanders, were from the narrow lands (in old Germany) were called les Anglois in Old French. A single person would be called l'Anglois in French but Langlois in Old French. Other Vikings or Norsemen came from Jutland and Saxony.
LANGLOIS - From Old French, l'Anglois which means The English Man, name given to someone from England or someone who pretends to have been there.