[1] : The Collaborative International Dictionary of English v.0.48

mandator \manda"tor\, n. l.
   1. a director; one who gives a mandate or order. --ayliffe.
      1913 webster

   2. rom. law the person who employs another to perform a
      mandate. --bouvier.
      1913 webster

[2] : WordNet (r) 2.0

mandator
     n : an authority who issues a mandate

[3] : Bouvier's Law Dictionary, Revised 6th Ed (1856)

mandator, contracts. the person employing another to perform a mandate. 
story on bailm. sec. 138; 1 brown, civ. law, 382; halif. anal. civ. law, 70. 

Mandator >> M Words
Mandator, definition of term: Mandator
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