It's Polish. I'm of Polish decent and have started to relearn the language that was used around me growing up.
Good on you! My mother-in-law is Czech; when she came here in 1940, she was on the boat with and 'adopted' by a group of refugee poles... been family friends; considered as relatives, as long as I can remember. Good people.. fierce, determined, honest and the kind of folks that make me proud... during the Polish Revolution (walesa) they showed me a thing or two about being Americans too.
..and the best damn sausages I've ever had.