I know Lucjan (?) Kempinski was the brother of my great grandmother Cecylia Kempinska. They had 3 other sisters (married names - Bartnicka Anastazja, Truszkowska Wladyslawa, Leszczynska). They all left Poland for US, most probably in 1914. Only Cecyla has been refused the visa beacuse of the poor eyesight, therefore her mother stayed with her in Poland. Their parents were Kempinski Franciszek and Kempinska Anna (maiden name Zarzycka). We were in touch with the US family until the 50's and then because of the communist regime and the fact that my grandfather was a policeman they were forced to stop writing letters. We still have some family photographs, also from the US.