The two names I have given seem like the only names containing "Jakub Bauman" or "Jacob Bauman"
in the database that matches the appropriate age for students at school #1. These two names are the same person,
"Jakub" was a very commom named and had many different spellings. The profile that was called "Mendel Jakub Bauman"
is his old address and I guess he got re-entered into the database at his new address when he was relocated. However, they
spelled his name differently but the birthdays are the same and in the ghetto note it says that Mendel Jacob Bauman was moved from "ALEXHOF 28" which is his address on the other profile. Whether this name matches to Jakub Leib Bauman or not, I have found a lot of"Baumans" with the same address! (See "The Ghetto" research.)
I have found many people with the same address as Mendel. Lajb Bauman (who I believe to be the father), Chana Bauman (who I believe to be the mother), Mordka Ber Bauman (either a brother or cousin), and Zlata Bauman (a cousin.) All of these people have the same address as Mendel and so they are all obviously related in some way. Sadly, I believe that Zlata might've died in the holocaust. I looked up her name and found a Lodz Ghetto Holocaust memorial and her name was on it. There are 2 other Zlata Baumans in the database so I'm not positive if it was her but I'm sure I'll find out sometime.
http://www.museumoffamilyhistory.com/hm-lodz-nm-1.htm
This is the website with the memorial.