Holocaust: Theresienstadt ( KUEBEL, WALZER, STORCH)

A few of those born in Lubaczow were, according to the German Bundesarchiv, residents of Berlin before the war, and deported to Theresienstadt:

Lubaczow-Berlin- Theresienstadt

KUEBEL / Kübel, Michael Joseph, born 1880                  Resident of Berlin
                  From Berlin to Theresienstadt  in Jan 1944
                  From Theresienstadt to Auschwitz in Oct 1944

WALZER  Isaak, born 1864                                              Resident of Berlin
                  From Berlin to Theresienstadt in Jan 1943
                  Died in Theresienstadt in Aug 1943

WALZER nee STORCH, Chaja , born 1868                         Resident of Berlin
                 From Berlin to Theresienstadt in Jan 1943
                 From Theresienstadt to Auschwitz in Dec 1943

Could Isaak and Chaja WALZER be a married couple?