The Rashevski Tango 2003 one on netflix

Adolphe ‘Dolfo’ Rashevski travels to Israel with grandson Ric, but his brother, orthodox rabbi Samuel ‘Shmouel, refuses to come attend their fellow Auschwitz survivor sister Rosa’s funeral. Back in their home, the whole well-integrated family and their ‘gojim’ (non-Jewish and would-be) partners regularly wrestle with the meaning of Jewish blood, traditions and religion. For one it seems the way to gain a wife, for others the bomb under or the obstacle for a marriage. Yet love tends to conquer all but death.