After the occupation of Lwów by the Soviet army in 1939 and the reorganization of the University by the NKVD, Allerhand was fired, but after several months allowed to teach at the Law Faculty again.
Some time later, after the outbreak of the German–Soviet war of June 30, 1941 and the takeover of Lwów by the Wehrmacht, he refused the position of chairman of the Judenrat (Jewish council).
He was forced to move into the Lvov Ghetto along with his family, and therefore escaped the July Massacre of Lviv professors committed by an Einsatzkommando.
In August, his son Joachim and daughter-in-law Zina (Zinajda) along with their only child Leszek made a successful escape into the aryan side of the city.
On 10 August 1941, Allerhand and his wife Salome (Salomea née Weintraub) were transported from the Ghetto to Janowska concentration camp on the outskirts of Lwów.

Their deaths are not documented, but after the war, Karol Koranyi made a reference to an eyewitness who survived the Camp and saw them being murdered in the same month by the Ukrainische Hilfspolizei.
Their bodies were burned and the ashes scattered.
Notably, Allerhand family sometimes appears in print incorrectly as victims of Belzec extermination camp.
However, his son Joachim with wife Zina and his grandson Leszek who was 10 at the time, had survived the Holocaust.
Decades later and only after the collapse of the Soviet empire - known for falsifying the wartime history of the city - his grandson Leszek published a 2003 book based on the memoirs of his grandfather written in 1941–1942, started by Allerhand soon after the German attack of Lwów and concluded in February 1942.
His account of life in the Ghetto, although not nearly as voluminous as Dobroszycki's Chronicle of the Łódź Ghetto provides invaluable insight into the lives of Polish Jews under the Nazi occupation of Lwów.
It describes the 1941 pogroms perpetrated by Germans with the aide of local Ukrainians, but also, it includes a mention of his conversation with a former agitator installed at UoL by the Soviets, blaming the Poles for it.
He was promptly corrected by Allerhand.

The book, entitled Zapiski z tamtego świata (Notes from the Other World; or, A Memoir of Other World), is supplemented with the recollections of the young Leszek Allerhand who lived with his grandparents for a long time before their untimely deaths.
The original manuscript survived in the Archives of the Jewish Historical Institute in Warsaw (Teka Lwowska), unknown to anybody before the 1962 death of prof.
Stefan Stasiak from UoL who kept it safe among his own papers.

The cenotaph of Maurycy Allerhand and his wife, Salome, can be found at the New Jewish Cemetery in Kraków.
In 2009, he became patron of the Allerhand Institute law foundation based in Kraków.
After the occupation of Lwów by the Soviet army in 1939 and the reorganization of the University by the NKVD, Allerhand was fired, but after several months allowed to teach at the Law Faculty again. Some time later, after the outbreak of the German–Soviet war of June 30, 1941 and the takeover of Lwów by the Wehrmacht, he refused the position of chairman of the Judenrat (Jewish council). He was forced to move into the Lvov Ghetto along with his family, and therefore escaped the July Massacre of Lviv professors committed by an Einsatzkommando. In August, his son Joachim and daughter-in-law Zina (Zinajda) along with their only child Leszek made a successful escape into the aryan side of the city. On 10 August 1941, Allerhand and his wife Salome (Salomea née Weintraub) were transported from the Ghetto to Janowska concentration camp on the outskirts of Lwów.
Their deaths are not documented, but after the war, Karol Koranyi made a reference to an eyewitness who survived the Camp and saw them being murdered in the same month by the Ukrainische Hilfspolizei. Their bodies were burned and the ashes scattered. Notably, Allerhand family sometimes appears in print incorrectly as victims of Belzec extermination camp. However, his son Joachim with wife Zina and his grandson Leszek who was 10 at the time, had survived the Holocaust. Decades later and only after the collapse of the Soviet empire - known for falsifying the wartime history of the city - his grandson Leszek published a 2003 book based on the memoirs of his grandfather written in 1941–1942, started by Allerhand soon after the German attack of Lwów and concluded in February 1942. His account of life in the Ghetto, although not nearly as voluminous as Dobroszycki's Chronicle of the Łódź Ghetto provides invaluable insight into the lives of Polish Jews under the Nazi occupation of Lwów. It describes the 1941 pogroms perpetrated by Germans with the aide of local Ukrainians, but also, it includes a mention of his conversation with a former agitator installed at UoL by the Soviets, blaming the Poles for it. He was promptly corrected by Allerhand.
The book, entitled Zapiski z tamtego świata (Notes from the Other World; or, A Memoir of Other World), is supplemented with the recollections of the young Leszek Allerhand who lived with his grandparents for a long time before their untimely deaths. The original manuscript survived in the Archives of the Jewish Historical Institute in Warsaw (Teka Lwowska), unknown to anybody before the 1962 death of prof. Stefan Stasiak from UoL who kept it safe among his own papers.
The cenotaph of Maurycy Allerhand and his wife, Salome, can be found at the New Jewish Cemetery in Kraków. In 2009, he became patron of the Allerhand Institute law foundation based in Kraków.
Maurycy Allerhand