The Collaborative International Dictionary of English v.0.48:

Make-peace \Make"-peace`\ (-p[=e]s`), n.
   A peacemaker. [R.] --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

make-peace
    n 1: someone who tries to bring peace [syn: conciliator,
         make-peace, pacifier, peacemaker, reconciler]