WordNet
n. a person who manages the affairs of another
Wikipedia
In common law jurisdictions, a personal representative or legal personal representative is a person appointed by a court to administer the estate of another person. If the estate being administered is that of a deceased person, the personal representative is either an executor if the deceased person left a will or an administrator of an intestate estate. In other situations, the personal representative may be a guardian or trustee, or other position. As a fiduciary, a personal representative has the duties of loyalty, candor or honesty, and good faith. In the United States, punctilio of honor, or the highest standard of honor, is the level of scrupulousness that a fiduciary must abide by.
In either case of a deceased estate, a probate court of competent jurisdiction issues a finding of fact, including that a will has or has not been filed, and that an executor or administrator has been appointed. These are often referred to as "letters testamentary", "letters of administration" or "letters of representation", as the case may be. These documents, with the appropriate death certificate, are often the only license a person needs to do the banking, stock trading, real estate transactions, and other actions necessary to marshal and dispose of the deceased's estate in the name of the estate itself.
The Personal Representative is an officer who serves before the Combatant Status Review Tribunals, convened for the captives the United States holds in extrajudicial detention in the Guantanamo Bay detention camps, in Cuba.