We Are Looking for a Holocaust Movie

It’s been a while since the last We Are Looking For a Movie post. I had some requests via e-mail and was lucky to be able to say which movie it was but in this case I draw a blank.

Can anyone help?

Years ago I watched a movie about a young Jewish boy whose mother (who had married a Jew against her father’s will) brought him to live with his grandfather to save him. She did not stay, herself.  The grandfather was either Italian or French. I think it was a foreign film with subtitles.
 
The emerging relationship was so touching. One significant scene I hope will help in identifying the movie is when the grandfather admonished the boy never to let anyone see him naked because of his circumcision.
 
I would love to view this movie again, but I don’t know the title. It has to be fairly old. Can anyone there help me to identify this movie?

The picture above is taken from Au revoir les enfants. While that is an excellent film, it is not the film we are looking for.