This man is the father of my grandfather. He was born in 1888 in Kladovo which is a town at the river Danube at the Romanian, Serbian and Bulgarian border. He used to work as a sailor on the river Danube and in 1914 when the Ist World War has started he was with his ship in Budapest. Being Serbian citizen he got immediately arrested and deported. It seems it wasnt so bad to be deported because during the deportation he got married with a Hungarian woman (her photo you can see here).