Elmofongo: My brother made this name out of a delicacy here in Puerto Rico called Mofongo:
http://en.wikipedia.org/wiki/Mofongo He just thinks its a funny sounding name :P
Hmm, I always thought of it as Elmo-Fongo, not El-Mofongo.
Maighstir. As for why; a friend started using "Dominus" as he thinks Latin is a good language to use in fantasy settings, while I disagree and more commonly use variations of Celtic languages, so I tried looking up the same word in a variation of Gaelic, the research finally ended at my username (not the exact translation I was looking for, perhaps, but looks good and doesn't seem all too common).