durante minore aetat

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
DURANTE MINORE AETATE. During the minority.
     2. During his minority, an infant can enter into no contract, except 
those for his benefit. If he should be appointed an executor, administration 
of the estate will be granted, durante minore &,tate, to another person. 2 
Bouv. Inst. n. 1555. 
    

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