Pacificator

Pa·cif'i·ca`tor noun [ Latin ] One who, or that which, pacifies; a peacemaker. Bacon.
Found on http://www.encyclo.co.uk/webster/P/2

Pacificator

• (n.) One who, or that which, pacifies; a peacemaker.
Found on http://thinkexist.com/dictionary/meaning/pacificator/
No exact match found