The Collaborative International Dictionary of English v.0.48:

Conusor \Con`u*sor"\, n. (Law)
   See Cognizor.
   [1913 Webster]

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

CONUSOR. The same as cognizor; one who passes or acknowledges a fine of
lands or tenements to another. See Consignor.