Genrich Vengrovich

This is my father's junior brother Genrich Vengrovich. This is one of the three photos of my parent's family,
taken by my father as a keepsake when he forsook parental house in 1913. My father has kept the photograph.
When father left home, Genrich was in the middle year at Lyceum. The picture was taken in Warsaw in the 1910s.

I know a little about my father's family. I have never seen my parental kin. My father did not tell much about them either.
My father, Mark Vengrovich (his real name) was born in 1897 in Warsaw [today Poland].
It was the territory of the [tsarist] Russian empire at that time.

As father told me grandfather was a merchant of the first Guild, a very wealthy man. They lived in the center of Warsaw.
I also know that my father had a younger brother Genrich. When father left, Genrich was in a junior year at lyceum.
When I was in my teens I remember that my father got a message from Genrich saying:
'Still alive and kicking.' That's it. No news was coming from Genrich after this time.

Father went to trade school in Warsaw, but did not finish it.
Communistic ideas appealed to my father,
he left home when he was 16.
He stopped getting in touch with his family since then.
He went to Russia and never came back to Warsaw.