The Collaborative International Dictionary of English v.0.48:

Liegeman \Liege"man\ (l[=e]j"man), n.; pl. Liegemen
   (l[=e]j"men).
   Same as Liege, n., 2. --Chaucer. Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

liegeman
    n 1: a person holding a fief; a person who owes allegiance and
         service to a feudal lord [syn: vassal, liege,
         liegeman, liege subject, feudatory]