N.J. Stat. Ann. § 3A:37-6

If a widow be lawfully expelled or evicted from her jointure, or from any part thereof, without fraud, by lawful entry or action, she shall be endowed of such much of the residue of her husband's real estate whereof she would have been endowed but for the jointure, as shall equal in amount or extent the real estate from which she is so expelled or evicted.