INTERVENTOR
Etymology
Noun
interventor (plural interventors)
One who intervenes; a mediator, especially one designated by a church to reconcile parties and unite them in the choice of officers.
(US) A mine inspector.
Source: Wiktionary
In`ter*ven"tor, n. Etym: [L.: cf. F. interventeur.]
Definition: One who intervenes; a mediator; especially (Eccles. Hist.), a
person designated by a church to reconcile parties, and unite them in
the choice of officers. Coleman.
Source: Webster’s Unabridged Dictionary 1913 Edition