What would my last name be?

According to this thread, I would have to follow a specific set of rules. As one can obviously deduce from my dashing facial features, I'm of the Plainsfolk. Therefore, my name falls under the rules:

AB-CB

And given my first name that everyone knows me by,

A= Den
and

B= Mo

So that leaves C. Which, at the moment, I just can seem to decide upon. If at all. I mean, I already have a last name. It's a very sturdy, fitting last name, inherited from my adopted Dwarven parents. Don't you think it suits me? I chose to keep it translated to English so people would not misunderstand. It's rather gutteral sounding in dwarven anyway. So let's say I just want a new last name for fun.

AB CB
Denmo ____mo


where C does not have to rhyme with A, nor does it have to have the same amount of syllables.

Well, lore people, what should C be?