PROB §17203: (a) At least 30 days before the time set for the hearing on the petition, the petitioner shall cause notice of hearing to be delivered pursuant to Section 1215 to all of the following persons: (1) All

(a) At least 30 days before the time set for the hearing on the petition, the petitioner shall cause notice of hearing to be delivered pursuant to Section 1215 to all of the following persons: (1) All trustees. (2) All beneficiaries, subject to Chapter 2 (commencing with Section 15800) of Part 3. (3) The Attorney General, if the petition relates to a charitable trust subject to the jurisdiction of the Attorney General. (b) At least 30 days before the time set for hearing on the petition, the petitioner shall cause notice of the hearing and a copy of the petition to be served in the manner provided in Chapter 4 (commencing with Section 413.10) of Title 5 of Part 2 of the Code of Civil Procedure on any person, other than a trustee or beneficiary, whose right, title, or interest would be affected by the petition and who does not receive notice pursuant to subdivision (a). The court may not shorten the time for giving notice under this subdivision. (c) If a person to whom notice otherwise would be given has been deceased for at least 40 days, and no personal representative has been appointed for the estate of that person, and the deceased person’s right, title, or interest has not passed to any other person pursuant to Division 8 (commencing with Section 13000) or otherwise, notice may instead be given to the following persons: (1) Each heir and devisee of the decedent, and all persons named as executors of the will of the decedent, so far as known to the petitioner. (2) Each person serving as guardian or conservator of the decedent at the time of the decedent’s death, so far as known to the petitioner.