Although the Polish language does not use the letters Q - V - X in their alphabet, you might find names names in your family beginning with these letters. This is because of the phonetics used to spell them in English and other languages.
No name in Polish begins with a Y. They are almost always German or Russian/Ukrainian/Belarusian. In Polish, the J is pronounced as a Y in English. The hard sounding J is the combination of two alphabet letters. They are DZ.