For the Sydney-raised artist Ella Dreyfus, a veil of silence lay over her family during her childhood. “I grew up with a large Jewish family on my mother’s side, who’d escaped from the pogroms in Vilna in the early 20th Century and prospered in Australia,” she told DW. “But on my father’s side there was not one close relative alive, nor did he tell us anything about his German background.” For a long time, Dreyfus knew very little about her German-Jewish family history. But in the documentary Dreyfus Drei (Dreyfus Three), she has ventured into the past in search of...