Kotz

* As a German surname, from the name Kotsasse, Kotsate (literally “inhabitant of a cottage”), from Middle High German kote, from Middle Low German kōte, from Old Saxon *kota, from Proto-West Germanic *kotā, from Proto-Germanic *kutą. * As a German and Jewish surname, from Kotze (“coarse blanket”). * Also as a German surname Kötz, from the personal name Konrad. * As a Hungarian (Kótz) and German surname, of Slavic origin, from kóc (“untidy hair”) (compare Russian клок (klok, “tuft”)), presumably influenced by the word meaning coarse blanket (as in Polish koc).

来源：wiktionary