If such right or title first accrued to an ancestor or predecessor of the person who brings the action or makes the entry, or to any other person under whom he claims, the twenty years shall be computed from the time when the right or title so first accrued.
Mass. Gen. Laws ch. 260, § 22
Accrual of right or title to land; limitation
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.