Pom Pax
I have checked my list for Z, but I do not find any particulalry hard names but Zmitrowicz. I wonder of Szczygielski.
That said I recall a story about Joe Kmiecik, longest flying Polish pilot in the RAF, who once sought for a navigator - this was late 1970s or early 1980s I think. He approached a young chap with nav wings, and asked him to fly. The chap then refused, saying he has no maps or equipment, but Joe said, that it is not necessary, that he knows the route, and he just cannot take off without navigator due to regulations.
Geriaviator
Iggy is known to me. He is the only Polish pilot known to me to fly Neptune in the RAF. He passed away not so long ago. Do you have your father's log books by any chance?