Up from Slavery by Booker T. Washington — Read

After the coming of freedom there were two points upon which practically all the people on our place were agreed, and I found that this was generally true throughout the South: that they must change their names, and that they must leave the old plantation for at least a few days or weeks in order that they might really feel sure that they were free.

In some way a feeling got among the coloured people that it was far from proper for them to bear the surname of their former owners, and a great many of them took other surnames. This was one of the first signs of freedom. When they were slaves, a coloured person was simply called "John" or "Susan. " There was seldom occasion for more than the use of the one name. If "John" or "Susan" belonged to a white man by the name of "Hatcher," sometimes he was called "John Hatcher," or as often "Hatcher's John. " But there was a feeling that "John Hatcher" or "Hatcher's John" was not the proper title by which to denote a freeman; and so in many cases "John Hatcher" was changed to "John S. Lincoln" or "John S. Sherman," the initial "S" standing for no name, it being simply a part of what the coloured man proudly called his "entitles."