I / interventor
noun

interventor

gen. interventōris · gender masculine · decl. 3rd
One who comes in; a visitor
One who comes in, a visitor: vacuus ab interventoribus dies, Cic. Fat. 1, 2.—
A surety; bondsman
A surety, bondsman: si filius fidejussor, vel quasi interventor acceptus sit, Dig. 15, 1, 3.—
An intercessor
An intercessor, mediator, Lampr. Comm. 4.