Alexander Blade! The name explodes with excitement. Now imagine a writer who has produced stories for decades, appeared in different magazines, even different kinds of magazines. You would think that person has some small amount of reputation, recognition, right? But what do you know about Will Garth, E. K. Jarvis, S. M. Tenneshaw or Adam Chase? Nothing. They are all house names used occasionally for big writers like Edmond Hamilton or Henry Kuttner (when they had several stories in an issue) but usually by unknown editorial assistants who produced thousands of words a month as part of their duties.
"One of the longest-lasting Ziff-Davis House Names, originally the personal pseudonym of David Vern [...]. The name was later used by Howard Browne, Millen Cooke, Chester S Geier, Randall Garrett with Robert Silverberg (who also wrote solo under the name), Roger P Graham (Rog Phillips), Edmond Hamilton, William L Hamling, Heinrich Hauser, Berkeley Livingston, Herb Livingston, William P McGivern, David Wright O'Brien, Louis H Sampliner, Richard S Shaver, Don Wilcox and Leroy Yerxa. A large number of stories were published as by Blade, most in Amazing and Fantastic Adventures and some in Imagination, Imaginative Tales and Science Fiction Adventures. The name was last used by John Jakes for "The Deadly Mission" [...]."