I know that there are 2 unrelated Piotrowski families in America. My ancestor was JOHN PIOTROWSKI. Only info I have is that he was born in Germany (because than there was no Poland).I understand that he got married somewhere in Europe (maybe in Poland, naybe in Germany) to Mary BIELSKI(spelling might be -BEILSKI).He should be born in the end of 19th century (1870 ???-I'm just guessing).They had few kids in Europe, others-in USA. Oldest child was Frank Piotrowski. John Piotrowski arrived to New York from HAMBURG on January 8,1881.Then he moved to La Porte County, Indiana.