Mine came about through my somewhat failure.
According to Cognitive Ability Tests, I am an all round genius. However, around the age of 12, my school found that my English levels were not doing as well as my science and maths, and my English teacher suggested I find a way to improve my writing with other people.
So I took to the internet. I got into forum roleplay- most of which ended in Skype chats that I regret now I know Microsoft record and read them- and Mestaris was one of the names I used quite frequently; as I often hate picking regular names.
And here we are today :P