Mass. Gen. Laws ch. 203E § 801 : REAL AND PERSONAL PROPERTY AND DOMESTIC RELATIONS — DESCENT AND DISTRIBUTION, WILLS, ESTATES OF DECEASED PERSONS AND ABSENTEES, GUARDIANSHIP, CONSERVATORSHIP AND TRUSTS — MASSACHUSETTS UNIFORM TRUST CODE — DUTIES AND POWERS OF TRUSTEE — Duty to administer trust
Upon acceptance of a trusteeship, the trustee shall administer the trust in good faith, in accordance with its terms and purposes and the interests of the beneficiaries and in accordance with this chapter.