Tenn. Code Ann. § 30-2-104: Death of surviving spouse or death, majority, or marriage of minor child during year

(a) Death of a surviving spouse within the one-year period for which the allowance is provided under § 30-2-102 , for the surviving spouse's maintenance, shall not affect the vested right of the surviving spouse to the allowance or the ordering thereof by the court.

(b) If an unmarried minor child dies, marries or comes of age, no allowance shall be made under § 30-2-102 for the minor's maintenance for any period after the child's death, marriage or coming of age.