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]