The name Kozlowsky is a proud emblem of the ancient Polish homeland. Over the course of its history, the boundaries of Poland changed frequently and Polish names have much in common with other Slavic names in the way they are formed. Polish surnames often end with a diminutive suffix, such as -owicz, ak, ski or ska. While the "patronymic" surname, which is derived from the name of the father, is the most common form of a hereditary surname in the Poland; there are also "occupational" surnames. An occupational type of surname, the family name Kozlowsky is derived from the occupation of goat herd. This name is a derivative of the word koza which means goat and, since this used to be a rather common profession, there were many bearers of the name. In fact, Kozlowsky is one of the most common surnames in contemporary Poland.
^ Filby, P. William, Meyer, Mary K., Passenger and immigration lists index : a guide to published arrival records of about 500,000 passengers who came to the United States and Canada in the seventeenth, eighteenth, and nineteenth centuries. 1982-1985 Cumulated Supplements in Four Volumes Detroit, Mich. : Gale Research Co., 1985, Print (ISBN 0-8103-1795-8)