Massachusetts General Laws Part II. Real and Personal Property and Domestic Relations (Ch. 183-210) Ch. 190B, § 5-305

(a) Any qualified person may be appointed guardian of an incapacitated person.

(b) Unless lack of qualification or other good cause dictates the contrary, the court shall appoint a guardian in accordance with the incapacitated person's most recent nomination in a durable power of attorney.

(c) Except as provided in subsection (b), the following, if suitable, are entitled to consideration for appointment in the order listed:

(d) With respect to persons having equal priority, the court shall select the one it deems best suited to serve. The court, acting in the best interest of the incapacitated person, may pass over a person having priority and appoint a person having a lower priority or no priority.