cognisor

from The Collaborative International Dictionary of English v.0.48

Cognisor \Cog`ni*sor"\ (? or ?), Cognisee \Cog`ni*see\, n.
   See {Cognizor}, {Cognizee}.
   [1913 Webster]

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

COGNISOR, English law. One who passes or acknowledges,a fine of lands or 
tenements to another, in distinction from the cognisee, to whom the fine of 
the lands, &c. is acknowledged.