GEORGE HERMAN SCHEFFAUER
When Scheffauer was twenty-one he published a poem titled "The Sea of Serenity," which was the basis for a hoax he and Bierce perpetrated in the literary supplement of Hearst's San Francisco Examiner on March 12, 1899. Bierce, introducing the poem, billed it as a lost, unpublished verse by Edgar Allan Poe. There was little public reaction, but Bierce didn't see the prank through. He announced that he was "off the paper," resigned, because Hearst's editors, whom Bierce called "fools, fakers, and freaks," had yellowed and mangled Bierce's column. (Actually he didn't formally quit until 1909.) So it fell to the supplement's editor, Carroll Carrington (who was in on the plot), to admit on April 9, 1899, that the poem wasn't written by Poe, but by Scheffauer.
Bierce later severed relations with Scheffauer over an alleged slight, telling the younger writer in a letter, "If in the future you are convinced that you have become different, and I am still living, my welcoming hand awaits you. And when I forgive I forgive all over, even the new offense."
Scheffauer, who published several books of verse, died a suicide after murdering his wife in Berlin in 1927.
A large collection of photos, the Herman George Scheffauer Photograph Album, is archived at the Bancroft Library, UC Berkeley. These photos of Scheffauer with Ambrose Bierce (although one is suspect) are widely available on the Internet.