{geni:about_me} cf. details from actual IKG-Wien birth registrations of grandsons Paul Georg & Peter August BUM:

Father: Dr. Rudolph BUM," Arzt" b. 18 Jan 1866 in Brünn, Mähren to Moritz BUM & Sofie, née BLOCH

Mother: Margarethe POLLAK, b. 18 Jan. 1882 in Wien, to Moriz POLLAK & Maria, née Pessl