The Collaborative International Dictionary of English v.0.48:

Feodary \Feod"a*ry\, n.
   1. An accomplice.
      [1913 Webster]

            Art thou a feodary for this act?      --Shak.
      [1913 Webster]

   2. (Eng. Law) An ancient officer of the court of wards.
      --Burrill.
      [1913 Webster]