If your ancestors' surname in the U.S. was Garlick, and they were Jews from Germany, then it's possible their surname was originally Knobloch (the German word for garlic.) My great-great-grandmother Bertha had the surname Knobloch in Germany but changed it to Garlick in the United States, like many others with her surname. Please contact me through the messaging system at Geni if you think this applies to your Garlick ancestors.