jus patronatus

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
JUS PATRONATUS, eccl. law. A commission from the bishop, directed usually to 
his chancellor and others of competent learning, who are required to summon 
a jury composed of six clergymen and six laymen, to inquire into and examine 
who is the rightful patron. 3 Bl. Com. 246. 
    

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