Mine's just a name I came up with for various fantasy RPGs and the like. I've used it in D&D, Morrowind, Oblivion, Dragon Age?
I don't remember where I first used it, but I remember where I got it. When my old computer worked, I used to play a lot of Master of Orion 2. I was trying to come up with a name for something fantasy RPG related I think, and I decided to just go play MoO2. I saw this race called the Mrrshans or something. I kind of liked its sound, but thought it was too animal (the species was cat-like). So I added some vowels, switched some stuff around, and saw some progress. Then I decided to add some sound that you don't really see in names very much. So I added "eu" as in "you" to the beginning. Thus "Eumersian" from "Mrrshan".