Inheritance

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late Middle English (formerly also as enheritance ): from Anglo-Norman French enheritaunce ‘being admitted as heir’, from Old French enheriter (see inherit).

wiktionary

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Recorded since 1473, inherit +‎ -ance. More at inherit.

etymonline

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inheritance (n.)

late 14c., enheritaunce "fact of receiving by hereditary succession;" early 15c. as "that which is or may be inherited," from Anglo-French and Old French enheritaunce, from Old French enheriter "make heir, appoint as heir" (see inherit). Heritance "act of inheriting" is from mid-15c.