Ah, Jackie, but if I told you that then wouldn't I be breaking the unwritten LIU rule I've seen a few newbies being chided about? I should tell you it is a composite of two words though.

Hrmph...grumble, grumble...can't believe you're going to make me work for it! Boy, some people!

I did acually spend time on the two-word theory before I asked, because it struck me that it was very easy to pull the name Mark out of those letters. But I couldn't come up with a last name that I was familiar with, which of course is not a real indication that I was wrong.
Mark Duble? Dubel? Blude and Lubed came to mind.

Some other possibilities: murk blade, bleak drum, dream bulk, blake drum. But I "doubt" that any of those are it.
Make blurd sounds like something meaningful, but--
hey! Who asked about homophones, anyway?