My cousin (Godmother) approached me and asked me to be her GPOA, Advanced directive, HealthProxy and living will. I suggested her brother should be but she said he wanted nothing to do with her. As a professional Live and Business coach I always suggest my clients in their elder years have a care agreement with someone they trust as well as a DPOA. She told me she had no one who would care for her should she became sick to help her with her daily living and so on. I explained the 2 were very different and having no husband or children she needs to find someone. She then asked me if I would handle it all. A very specific care agreement was setup with both of us and signed. Several months later the Living will, Health proxy, and GPOA was signed with her lawyer appointing me as well. Can one person serve as both?
But as cwillie mentioned above, ask the Attorney who drew up the legal documents.