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Re:These problems were designed to prevent Jewish people fro... by forapurpose on Saturday October 07, 2017 @03:20PM (#15425244)
> they tried to guess by the last name

You'll find this interesting:

https://news.ycombinator.com/item?id=15424769

Re:These problems were designed to prevent Jewish people fro... by lohankin on Saturday October 07, 2017 @06:21PM (#15426020)
Those cases were probably quite common. From wikipedia article about Glenn Gould, the great Canadian pianist: "The family's surname was changed to Gould informally around 1939 in order to avoid being mistaken for Jewish, given the prevailing anti-Semitism of prewar Toronto and the Gold surname's Jewish association"