Rule 15.6.1 - Notice: Method And Time(a) In proceedings under Pa.O.C. 15.4 the attorney for petitioners shall make a good faith effort to determine the address and identity of each parent and to provide notice of the proceedings. In adoption proceedings under Pa.O.C. 15.5 notice of the proceedings shall also be given to any persons who have custody pursuant to a valid Court Order.(b) Notice of the involuntary termination petition and hearing shall be served on the natural or putative father whose identity and/or whereabouts cannot be ascertained or on a mother whose identity and/or whereabouts cannot be ascertained by publication in the form and manner approved by the Court following presentation of a separate Motion for Service by Publication and Affidavit of Diligent Search as required by Pa.R.C.P. 430.(c) A motion for service by publication upon a natural or putative father must aver that the natural mother does not know the identity and/or whereabouts of the natural or putative father; must include his last known address, if known; and must also specify all attempts made by the petitioner to determine the correct identity and/or address of the natural or putative father. See also 23 Pa.C.S.A. § 2512(c).(d) Publication shall include, as a minimum, the contents of the notice required by 23 Pa.C.S.A. § 2513(b). Proof of publication shall be submitted to the Court prior to the hearing.