Any person may file a petition for appointment of a conservator if he or she has knowledge of circumstances necessitating a conservatorship. The persons having priority to be conservator, subject always to the Court’s discretion, are: (1) the person(s) designated in writing by the person with the disability designated in writing; (2) the person with the disability’s spouse; (3) any child of the person with the disability; (4) closest relatives of the person with the disability; and (5) other persons.