nonage

noun2

1. •
   The state of being under legal age; minority, the fact of being a minor.

   • In him there is a hope of government, / That in his nonage council under him, / And in his full and ripen'd years himself, / No doubt, shall then and till then govern well. — 1593
2. •
   (no longer used, rare) A payment formerly made to the parish clergy upon the death of a parishioner, consisting of a ninth of the movable goods.