The Horror Paperbacks of Fritzen Ravenswood

Who the hell is Fritzen Ravenswood, and why did this writer produce only two Zebra paperbacks? I don't think anyone knows. First, "Fritzen Ravenswood" is, obviously, a pen name* (update: actually, it's not; see comments below), but what a pen name (why, it's more impressive than Garth Marenghi). At least, I think it's a pen name; don't you? I suppose it's entirely possible the author's parents