The Tragedy of Pudd'nhead Wilson

Pudd'nhead Wilson (1894) is a novel by American writer Mark Twain.

Its central intrigue revolves around two boys - one, born into slavery, with 1/32 black ancestry; the other, white, born to be the master of the house.

The two boys, who look similar, are switched at infancy. Each grows into the other's social role.

The story was serialized in The Century Magazine (1893-4), before being published as a novel in 1894.
(from wikipedia.org)

Samuel Langhorne Clemens (1835 - 1910), known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer.

His novels include The Adventures of Tom Sawyer (1876) and its sequel, the Adventures of Huckleberry Finn (1885), the latter often called "The Great American Novel".