R.I. Gen. Laws § 33-16-5: Maximum number of wards.

No person other than a bank or trust company shall be a guardian of more than five (5) wards at one time, unless all the wards are members of one family. Upon presentation of a petition by an attorney of the veterans administration, or other interested person, alleging that a guardian is acting in a fiduciary capacity for more than five (5) wards as provided in this chapter and requesting his or her discharge for that reason, the court, upon proof substantiating the petition, shall require a final accounting forthwith from the guardian and shall discharge him or her from guardianships in excess of five (5) and forthwith appoint a successor.