Shortly after his liberation from Auschwitz by the Russians.
Otto Frank's cause of death is lung cancer
Otto Frank's second wifes' name was Elfriede Frank
At the time he did not know about his wife's death.
Otto Frank's birth name is Otto Heinrich Frank.
The name of Anne Frank's father is Otto Frank.
Otto Frank learned about what had happened to his daughters, Anne and Margot, from a friend who had survived the concentration camps and returned to the Netherlands after the war. This friend informed Otto that his daughters had died in Bergen-Belsen concentration camp.
Margot and Anne Frank were the daughters of Otto Frank. They were arrested and sent to Bergen-Belsen Ccncentration camp, and here is where they both contracted typhus. Anne died two days after the death of her sister Margot.
Otto Frank was sent to Aushwitz, the biggest camp, in August 1944. He got out on the Aushwitz death march, and went back to Amsterdam in about January 1945. :)
Otto Frank was Anne's father
Miep was Otto Frank's secretary.
Otto Frank went by Pim.
Otto Frank was the only survivor from that group.