Coexecutor
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
One who is executor with one or more others. See "Executor." COFFERER OF THE QUEEN'S (or king's) household.
In English law
A principal officer of the royal establishment, next under the controller, who, in the countinghouse, and elsewhere, had a special charge and oversight of the other officers, whose wages he paid.
Wharton.