The Collaborative International Dictionary of English v.0.48:

Conferrer \Con*fer"rer\ (k[o^]n*f[~e]r"r[~e]r), n.
   1. One who confers; one who converses. --Johnson.
      [1913 Webster]

   2. One who bestows; a giver.
      [1913 Webster] Conferruminate

WordNet (r) 3.0 (2006):

conferrer
    n 1: person who makes a gift of property [syn: donor, giver,
         presenter, bestower, conferrer]
    2: someone who converses or confers (as in a conference)