noun
conservator
kun-SUR-vuh-ter/kənˈsɜːrvətər/
A person entrusted to protect or manage something valuable.
The conservator helps the elderly man manage his bills under a court appointment.

Etymology
The keeping or guarding root, with a possibly intensive prefix, names a keeper or defender. In the legal sense, that protective role is an official duty to safeguard another person's interests.
In context
So, I would take the case to the court and become the the court-appointed conservator. And then I'd be able to place the person.
More examples
- A conservator recommends storing the old letters away from sunlight.
- The court appoints a conservator to manage her father's finances.
- Two conservators examine the fragile fabric before beginning repairs.
Forms
conservator · conservators
conserve verb — To protect something from loss or damage.
conservatorship noun — The legal responsibility for managing another's affairs.