Iol Shoov, his wife Dina, his sister Polya and her husband

This is a picture of (from left to right) my uncle Iol Shoov, my mother's brother, his wife Dina, his sister Polya and the man next to Polya must be her husband. The photo was taken somewhere in Poland in 1915. My mother's sister Polya was born in 1898 and her brother Iol in 1899. When their parents left Lodz, Polya and Iol refused to go with them for some reason. Before World War II they moved to Australia and then to Israel. Polya was married but I don't know her husband's name. I know that neither she nor Iol had any children. Polya died in 1956 and Iol died in 1960 in Israel.