This Max appears consistently in Hstd until his death in 1934.
Evidence for brothers: - Herman from newspaper article with wife Dora / Rankin
1932: Benjamin -- obit names Max and Adolph (and a sister). Death cert Harry/ unk mother. Matzevah b. Zvi. Bio: Son of Henry & Lena; mother & brother Adolph in Pottston; c. 1900 bakery in Homestead with unnamed brother.
1934: Max -- obit mentions no brothers. Death cert Harry/unk mother. Matzevah b. Zvi.
1945: Herman -- obit mentions no brother (but he would have been the last). Death cert unk. Matzevah Yehuda Zvi b. Levi. (Same father's name as Samuel Markowitz.)