Massachusetts General Laws Part II. Real and Personal Property and Domestic Relations (Ch. 183-210) Ch. 190B, § 5-402

(1) exclusive jurisdiction to determine the need for a conservator or other protective order until the proceedings are terminated; and

(2) exclusive jurisdiction to determine how the estate of the protected person which is subject to the laws of the commonwealth shall be managed, expended, or distributed to or for the use of the protected person, the protected person's dependents, or other claimants.