Thank you, C Handy. To clarify, his DNA is 45% E. European and Russian, which is exactly what his known family is. But, his 39% England and NW Europe ancestry really surprised us. We aren’t surprised about his 12% Norway and Baltic ancestry because of their relative proximity to Poland.
Because Poland and Western Russia have been overrun for millennia, we understand that he would have some English and Western European ancestry. However, since all his known grandparents/great grandparents immigrated from E. Europe before 1895 and these identified cousins are his generation or younger, I believe your conclusion is accurate.
Perhaps some of my unrecognized DNA cousins are descendants of my unknown great grandfather. All we know from a family legend is that he supposedly died in a bar fight in St. Louis.
Thanks, Jan