What kind of last name is Kolosiej?

Question:I think it is Albanian because it has the silent J at the end.

Best Answer - Chosen by Asker: I think it is Albanian because it has the silent J at the end.

It's actually from Galicia which was the southeastern-most part of Poland near the modern border with Slovakia and the Ukraine. Immigration records give a couple of common variants, KOLOZIEJ and KOLOSZIEJ. They're all from Galicia and the records should be available to you from the National Archives to help you identify their hometown from their immigration and naturalization records. From there you can order the films for the hometown from the LDS and do several more generations of research.