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William Faulkner changed the spelling of his last name from "Falkner" to "Faulkner."
Rocky Faulkner's birth name is Rock Faulkner.
Trader Faulkner's birth name is Ronald Faulkner.
Sanford Faulkner's birth name is Sandford C. Faulkner.
Lisa Faulkner's birth name is Lisa Tamsin Faulkner.
Alta Faulkner's birth name is Alta Elaine Faulkner.
Carl Faulkner's birth name is Faulkner, Carl Stewart.
Ralph Faulkner's birth name is Ralph Bearce Faulkner.
Norbert Faulkner's birth name is Frederick Norbert Faulkner.
I think you are asking about William Jefferson Clinton who had his last name changed from Blythe to Clinton when he was a baby because his mother married Roger Clinton.
Shakespeare's children did have his surname. However, when his daughters married they changed their surnames to their husbands.
There is no well-known author named William DeBold Faulhaber. It is possible that the name is a combination of William Faulkner and William DeBold, both well-known authors. William Faulkner was an American writer known for his novels set in the American South, while William DeBold is not a widely recognized author.