We determined that the Mosze Sarna in the database is the same boy who signed the yearbook because it was the only name that matched the search. Also, he was in School #13B meaning he would be born between 1926 and 1932 and Mosze was born in 1929.
Other Information:
Ghetto Address: Franz 76
Ghetto Note: Weisenhaus
When we were looking for family members in the same database we came across MOJZESZ SARNA who is a boy with the same birthdate as Mosze Sarna, but had different ghetto addresses. This Sarna was also listed as Schueler meaning he is a student.
Other information on Mojzesz:
Ghetto address: Hamburger 9
Ghetto address: Hamburger 9 7
Ghetto Note: AUSG 14.1.42 TR1
If we follow this boy over Mosze, then we would know that he was deported on Jan 1, 1942 with the transport number 1.
If we follow Mojzesz, Chana Rywka Sarna may be a sister since she has the same ghetto addresses and ghetto note. Her birthdate is July 31, 1931 and her occupation is listed as Schuelerin meaning she was a student.
Szmul Sarna may be a brother since he has the all the same information as Mojzesz. His birthdate is August 12, 1933 and his occupation is listed as schueler meaning student.
Udla Sarna may be the mother since she has the same ghetto addresses and ghetto note. Her birth year is 1901 and her occupation is listed as Hausfrau meaning she was a housewife.