I also have and am searching Kus/Kush in Polnad. Have located my branch in Leki Dolne/Gorne Parish, in the southeastern section . There is a Kus/Kush mailing list on rootsweb, might be of some help. I have Michael Kush b 1842 mrd Katharina Pawlicka and various sp'ings, immigrated abt 1870 possibly through MI or NY. I can be mailed at
dw54624@alltel.net.