Count Emmo, Immo or Immon, was the name of at least one important Lotharingian nobleman in the 10th century, described by medieval annalists as a cunning strategist. Various life events of a nobleman of this name were recorded, although historians differ about exactly which records refer to the same person or people. The first record claimed for him shows him as a young noble granting land to a new vassal in the Condroz region in 934, a member of the entourage of Duke Gilbert of Lotharingia. During the revolt of Gilbert which ended at the Battle of Andernach in 939, he switched sides. After the revolt he was personally associated with the fort at Chèvremont, near Liège. It becomes difficult later in Immo's life to be sure that all records mentioning a count of this name are referring to the same person.