The proof of legal authority required by the Personal Representative (i.e. Executor or Administrator) dealing with a deceased person’s estate.  There are different types of Grant of Representation depending on the situation: e.g. Grant of Probate (where there is a Will); Grant of Letters of Administration (where there is not a Will); Grant of Letters of Administration with Will annexed (where there is a Will but there is no executor named, or when the executors are unable or unwilling to apply for the Grant).