Mass. Gen. Laws ch. 260 § 7 : COURTS, JUDICIAL OFFICERS AND PROCEEDINGS IN CIVIL CASES — STATUTES OF FRAUDS AND LIMITATIONS — LIMITATION OF ACTIONS — Minors and incapacitated persons

If the person entitled thereto is a minor, or is incapacitated by reason of mental illness when a right to bring an action first accrues, the action may be commenced within the time hereinbefore limited after the disability is removed.

Mass. Gen. Laws ch. 260, § 7

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