As I read this story, one of his adult children was given temporary guardianship, then came to an accord with the step mother, but now says that accord has been breached, and as of Monday, another adult child was made guardian. So the adult children do have some responsibility in the relationship ... IF they can find him. WIth all the stress of Parkinsons, or any other debilitating disease, the Family Feud isn’t the least bit helpful. Sad all around.
Guardianship can differ from state to state. States are trying to fix this with the Adult Guardianship and Protective Proceedings Jurisdiction Act. Not all have signed on though. So it depends on where the person is residing...