Since 2004, I've used the username "ferewulf". It's derived from Old English. "Fere" means "companion" or "friend" and "wulf" is (obviously) "wolf". At around the same time I met my other half, so it seemed doubly significant, since "fere" is also an old word for "spouse; animal's mate"; I've also always associated with a wolf, specifically a "rogue" wolf. Because the word "fere" is a homophone (a word that is pronounced the same as another word - in this case "fear" - but as a different meaning), it had some negative connotations, hence, it was changed instead to "companion". After that, "Companion Wulf" stuck and I've been using it ever since for all of my online projects, usernames and websites, and it's my official pen name for all my writing projects as well.