My uncle has been mentally retarded since the age of 2, and has been in an assisted living facility for the past 60 years. I am the only living relative left on that side of the family, and already consent for all of his health needs. He is unable to sign his name and has the mental capacity of a 2 yr old. As I mentioned above, I was given POA over my grandfather when he was in the early stages of dementia. He was the POA over his son, my uncle. Now that my grandfather has passed, how do I go about getting POA over his son, my uncle? I'd appreciate any help or advice here. Thank you.