Site: nolo.com
... Also, one of the two witnesses can't be:
related to the patient by blood, marriage, registered domestic ... What Are the Doctor's Obligations? ... In addition, no other person—such as a health care agent, attorney-in-fact, or conservator&mdash ... For information about appointing a health care agent and making known your own wishes for medical care ... at the end of life, see the Living Wills & Medical Powers of Attorney section of Nolo.com. ...