So the grandfather was secretly Jewish but hid this identity after surviving an attack by the Nazis in WWII. He commits suicide and at the funeral, Alex and his family have yamakas, indicating that they figured out that he is Jewish, thus technically making them Jewish. how did they know because he never told Jonathan or Alex in the movie, did he?
shareI assume the same way Jonathan found out, by surmising during the visit with Lista. You could ask how Johnathan knew the grandfather was Jewish, too. It's implied...
shareIt had to be more than figuring out, because they have Baruch on the tombstone as well. Poor Alex didn't seem shocked beyond measure when he found him in the tub. Perhaps they went back to Listia, and she confirmed it. And Alex seemed to be getting it when he was outside the farmhouse with Jonathan. "Do you think my grandfather is a....?" Right before the grandfather kissed her hand, Listia's lips formed the letter "B".
shareIm sure there was some investigation after tthe suicide. They might ask Augusta's sister.
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