Haw. Rev. Stat. § 572B-7: Persons under control of conservator or guardian.

(a) No civil union license may be issued to any applicant under the supervision or control of a conservator or guardian, appointed in accordance with chapter 560, unless the written consent of the conservator or guardian is signed, notarized, and filed with the agent.

(b) Any person who enters into a civil union without the consent provided for in subsection (a) shall acquire no rights by that civil union in the property of any person who was under the control or supervision of a conservator or guardian at the time the civil union was entered into.