Orthonym

“Samuel Langhorne Clemens” is the orthonym of “Mark Twain”.

Source: wiktionary

As such, the body of the collection is organic, housing a wide variety of heteronymic voices critically speaking to one another to enrich the overall complexity and yet unified wholeness of the orthonym that becomes the final product.

Source: wiktionary

A pseudonym (literally “false name”) is a name that differs from an original orthonym (“true name”), and as popularly understood is a new name that a person assumes for a particular purpose.

Source: wiktionary

“No sólo ser otro sino escribir la obra de otro” [“Not Only Being Other but Also Writing the Work of the Other”] thus engages Pessoa's poem “Autopsicografia” — attributed to the orthonym “Fernando Pessoa” — in a way that draws from the larger imaginary of Pessoa's notion of "channeling oneself," since Pessoa's poem's title, as Darlene Sadlier suggests, is "derived from the Portuguese psicografia [and] refers to the occult practice of writing through the suggestion or action of a spirit medium."

Source: wiktionary