Chaim Rosov,
Re your biography in Rootsweb\Ancestry.com:
The late Israeli painter-writer Nachum Gutman, in his Hebrew book of memoirs BEIN HOLOT U-KEHOL SHAMAYIM, mentions his friend Rosov. (page 165)
This Rosov and Gutman were students of art in Bezalel art school in Jerusalem. They were roommates in Jerusalem (they were so poor they shared the same bed, where they made their decision to join the Jewish Battalion). Then they served in this battalion together. Gutman says that after some time Rosov left to America and stayed there.
Is this Your Father Samoel Rosov?
Happy new year,
Amram