intercessor
noun
[ ˈɪntəˌsɛsə ]
• a person who intervenes on behalf of another, especially by prayer.
• "they rejected the notion that an intercessor was needed to appeal to God"
Similar:
mediator,
moderator,
go-between,
negotiator,
middleman,
intermediary,
intervenor,
interceder,
arbitrator,
arbiter,
conciliator,
reconciler,
broker,
honest broker,
petitioner,
supplicant,
liaison officer,
peacemaker,