Rabbi Simcha Bunim had several more children, Sarel (Wife of R' Iosel Sofer the Geza Zvi of Hordena ancestor), Genandel (wife of R' Selig son of R' Shmuel Rechles of Lublin), Malka (wife of R' Wolf Drucker of Brisk), Hindel (wife of R' Lazer son of Rabbi Moshe Lazers son of Rabbi Eleazar brother of Rema) and Chana (wife of R' Leib)
http://www.hebrewbooks.org/pdfpager.aspx?req=46421&st=&pgnu...
I write all children of Rabbi Simcha Bunim Meisles&Dreisel according to Elef Margaliot&Yichus brief published by Rabbi Shlomo Engelard.
1. Rabbi Moshe
2. R' Wolf
3. R' Shalom
4. Rabbi Avraham of Masty (Belarus) has son Nachum. They signed in Pinkas Kehilot Lithuania 1652.
5. R' Shlomo of Smorgon
6. R' Israel of Vilna
7. Rabbi Yehuda Leib, lived in krakow not in Belarus.
8. Leah, wife of Rabbi Isaac Bunim's.
9.Sarel wife of Rabbi Yosel Migeza Zvi
10. Malka wife of R' Wolf "printer"
11. Hindel, wife Rabbi Yakov Eliezer Lazers (son of Rabbi Moses Lazers son of Rabbi Elazar brother of Rema)
12. Chana, wife of R' Leib of Mstibova
13. Genandel wife of Rabbi Zelig son of Matityahu son of Samuel Rechles of Lublin. (Descendants of Maharam Lublin).
https://www.hebrewbooks.org/pdfpager.aspx?req=46421&st=&pgn...
pages 723-725. Elef Margaliot 327.