I has this information about Mitel:
Avrohom Eliezer Delman
12/7/2014 at 4:05 PM
[You can share or post the info below, hope it helps]
In the Sefer Ateres Yehoshua, by Rabbi Dovid Aryeh Leib Zunz (Bilgoray, 1936), on page 9 mentions Meitel as the daughter (of the Pnei Yehoshua and his second wife Taube) who died at an early age, and includes the text on her Matzeiva, she died in 1733 (30 years after the explosion). In Chapter 7 the other two daughters are discussed: Faiga and her husband Rabbi Shmuel Dov Hertzfeld are discussed on pages 47-49, and Rabbi Naftali Hertz Halperin is discussed on p. 51-52 as a son-in-law, though his wife’s name is not mentioned.
Rabbis Hertzfeld and Halperin are also mentioned as sons-in-law of the Pnei Yehoshua in Anaf Etz Avos, see here:
http://www.hebrewbooks.org/pdfpager.aspx?req=29120&st=&......