Message:
The intial 4 addresses are that of Szejwa/Szejna (Hanseaten, Muller, Siegfried, and Kranichweg). The Alexhof address belongs to Szajndla. The Krauter and Altmarkt address belong to Szlama, and the Krauter and Ozorkow address belong to Szmul. Curiously enough though, the Krauter addresses for Szlama and Szmul match exactly, so I believe that these boys may be related in some way (possibly brother because their d.o.b. places them approximately 6 years apart in age).