Pennsylvania Statutes Title 20 Pa.C.S.A. Decedents, Estates and Fiduciaries § 7605. Antilapse provision

(1) Subject to paragraphs (2) and (3), in the absence of a contrary intent appearing in the instrument creating a power of appointment or, in the donee's instrument, exercising the power, an exercise of the power of appointment in favor of any of the following, whether designated by name or as one of a class, shall not fail if the appointee is not living at the time the appointment becomes effective:

(2) Paragraph (1) applies if:

(3) The property appointed to the deceased appointee shall pass per stirpes to the appointee's issue living at the time the appointment becomes effective, but the appointment to a brother or sister or child of a brother or sister of the donee shall fail to the extent the property would pass to the spouse or issue of the donee if the appointment were to lapse.