He is very Polish
This indeed, does not really matter though, bracie. This area between Poland and Germany is so grey that a lot of interbreeding must have occured throughout the centuries. What would help would be a DNA test to test the percentages and find what shows up the most.
Filios, you've got Polish ancestors, right? so do you consider yourself Polish or Greek?
My father is Polish, my mother is Greek. I am proud of my Greek heritage, but I was born in Poland and was raised a Pole. So I consider myself Polish.
And I bet he was good at football too
This is a low blow. But what can you expect from a German?